This se.dll thing will not go away it just keeps coming back. My OS is ME, I've got AVG 7 and spywaresweeper. I first got this a few weeks ago and ended up formatting only to get reinfected the next day from a totally different site that I have visited for years and never had a problem with. Here's what happens:

AVG pops up with a virus warning about se.dll, I tell AVG to delete it, it does.
Spyware sweeper warns me of a homepage hijack, I restore to original.
I run Hijack This, check unwanted entries, including no name BHO and fix.
I then boot up in safe mode with system restore off, run AVG and delete the randomly named dll in windows\system.
This seems to get rid of it.

Initially se.dll would activate everytime I opened iexplorer until I deleted an exe in the internet explorer folder. It would also activate everytime I tried to add\remove search assistant uninstall.

After taking the above removal steps it activated roughly every two days regardless of what programs I am running, this I could live with, but now its back to activating every time I open iexplorer.

here's my hijack this log:

Logfile of HijackThis v1.97.7
Scan saved at 16:37:43, on 25/02/2005
Platform: Windows ME (Win9x 4.90.3000)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\MSTASK.EXE
C:\WINDOWS\SYSTEM\RESTORE\STMGR.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\IRMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WINDOWS\SYSTEM\KEYHOOK.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGCC.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGEMC.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGAMSVR.EXE
C:\PROGRAM FILES\WEBROOT\SPY SWEEPER\SPYSWEEPER.EXE
C:\WINDOWS\SYSTEM\SISTRAY.EXE
D:\STUFF\UTILS\WINZIP\WZQKPICK.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\PROGRAM FILES\SHAREAZA\SHAREAZA.EXE
C:\PROGRAM FILES\SOULSEEK\SLSK.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGWB.DAT
C:\WINDOWS\NETDDE.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
D:\STUFF\UTILS\HIJACKTHIS1977\HIJACKTHIS.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\TEMP\se.dll/sp.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\TEMP\se.dll/sp.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
O2 - BHO: CleanMyPC Popup Blocker - {7A9BC6B1-7F27-47c6-A66D-13582E81E537} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBHO.DLL
O2 - BHO: (no name) - {2A281425-4D47-4FF6-B622-8E74B3F5B02D} - C:\WINDOWS\SYSTEM\GBMGCPA.DLL
O3 - Toolbar: CleanMyPC Toolbar - {04164EC4-1E48-4279-818E-3721931E7636} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBAR.DLL
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [PCHealth] C:\WINDOWS\PCHealth\Support\PCHSchd.exe -s
O4 - HKLM\..\Run: [IrMon] irmon.exe
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [SiS Windows KeyHook] C:\WINDOWS\SYSTEM\keyhook.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGCC.EXE /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGEMC.EXE
O4 - HKLM\..\Run: [AVG7_AMSVR] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGAMSVR.EXE
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKLM\..\RunServices: [*StateMgr] C:\WINDOWS\System\Restore\StateMgr.exe
O4 - HKCU\..\Run: [SpySweeper] C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe /0
O4 - Startup: Utility Tray.lnk = C:\WINDOWS\SYSTEM\sistray.exe
O4 - Startup: WinZip Quick Pick.lnk = D:\Stuff\Utils\WinZip\WZQKPICK.EXE
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: MSN Messenger Service (HKLM)
O9 - Extra button: Related (HKLM)
O9 - Extra 'Tools' menuitem: Show &Related Links (HKLM)
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/s...sh/swflash.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O16 - DPF: {9F1C11AA-197B-4942-BA54-47A8489BB47F} (Update Class) - http://v4.windowsupdate.microsoft.co...407.3381944444

I also check my msconfig start up programs and have seen nothing suspicious. There must be something somewhere on my computer causing this but I can't find anything. I've searched through loads of help forums and found nothing that helps. Please help me get rid of this bloody thing!

Update your version of Hijack This from the link in my signature and then post a fresh log.

I have "removed" all entries refering to se.dll and about blank, as I have done dozens of times over the last few weeks. As far as I can tell everything looks clean but then I will get reinfected. If you'd prefer an infected log let me know and I'll wait a day or so till it comes back.

Logfile of HijackThis v1.99.1
Scan saved at 21:49:12, on 28/02/2005
Platform: Windows ME (Win9x 4.90.3000)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\MSTASK.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\SYSTEM\RESTORE\STMGR.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\IRMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WINDOWS\RUNDLL32.EXE
C:\WINDOWS\SYSTEM\KEYHOOK.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGCC.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGEMC.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGAMSVR.EXE
C:\PROGRAM FILES\WEBROOT\SPY SWEEPER\SPYSWEEPER.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\WINDOWS\SYSTEM\SISTRAY.EXE
D:\STUFF\UTILS\WINZIP\WZQKPICK.EXE
C:\PROGRAM FILES\SHAREAZA\SHAREAZA.EXE
C:\WINDOWS\SYSTEM\MSMSGS.EXE
C:\PROGRAM FILES\SOULSEEK\SLSK.EXE
C:\WINDOWS\SYSTEM\SPOOL32.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
C:\WINDOWS\SYSTEM\PSTORES.EXE
D:\HIJACK\HIJACKTHIS.EXE

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk
O2 - BHO: CleanMyPC Popup Blocker - {7A9BC6B1-7F27-47c6-A66D-13582E81E537} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBHO.DLL
O3 - Toolbar: CleanMyPC Toolbar - {04164EC4-1E48-4279-818E-3721931E7636} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBAR.DLL
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [PCHealth] C:\WINDOWS\PCHealth\Support\PCHSchd.exe -s
O4 - HKLM\..\Run: [IrMon] irmon.exe
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [SiS Windows KeyHook] C:\WINDOWS\SYSTEM\keyhook.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGCC.EXE /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGEMC.EXE
O4 - HKLM\..\Run: [AVG7_AMSVR] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGAMSVR.EXE
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKLM\..\RunServices: [*StateMgr] C:\WINDOWS\System\Restore\StateMgr.exe
O4 - HKCU\..\Run: [SpySweeper] C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe /0
O4 - Startup: Utility Tray.lnk = C:\WINDOWS\SYSTEM\sistray.exe
O4 - Startup: WinZip Quick Pick.lnk = D:\Stuff\Utils\WinZip\WZQKPICK.EXE
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O16 - DPF: {10000000-1000-0000-1000-000000000000} - file://C:\Program Files\Internet Explorer\wwsrfgkr.exe
O16 - DPF: {14A3221B-1678-1982-A355-7263B1281987} - ms-its:mhtml:file://c:\nosuch.mht!http://www.serv12.com/4/s1/1/q.chm::/file.exe
O18 - Filter: text/html - {BC3276C0-5B97-468F-B8AE-104BC97A470E} - C:\WINDOWS\SYSTEM\NPD.DLL

That isn't a clean log.

Boot into Safe Mode and ensure that you are showing Hidden Files and Folders.

Close all browser windows, restart Hijack This and put a checkmark next to the following entries:

O16 - DPF: {10000000-1000-0000-1000-000000000000} - file://C:\Program Files\Internet Explorer\wwsrfgkr.exe
O16 - DPF: {14A3221B-1678-1982-A355-7263B1281987} - ms-its:mhtml:file://c:\nosuch.mht!http://www.serv12.com/4/s1/1/q.chm::/file.exe
O18 - Filter: text/html - {BC3276C0-5B97-468F-B8AE-104BC97A470E} - C:\WINDOWS\SYSTEM\NPD.DLL

Click Fix Checked

Delete the following files and folders:
C:\WINDOWS\SYSTEM\NPD.DLL

Reboot and post a fresh log

Did what said, couldn't find npd.dll. I did get infected this morning with a whole load of spyware, which I had to remove before I could use anything.

Logfile of HijackThis v1.99.1
Scan saved at 13:03:34, on 01/03/2005
Platform: Windows ME (Win9x 4.90.3000)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\MSTASK.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\IRMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WINDOWS\SYSTEM\PSTORES.EXE
C:\WINDOWS\RUNDLL32.EXE
C:\WINDOWS\SYSTEM\KEYHOOK.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGCC.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGEMC.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGAMSVR.EXE
C:\PROGRAM FILES\WEBROOT\SPY SWEEPER\SPYSWEEPER.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\WINDOWS\SYSTEM\SISTRAY.EXE
D:\STUFF\UTILS\WINZIP\WZQKPICK.EXE
C:\WINDOWS\SYSTEM\RESTORE\STMGR.EXE
D:\HIJACK\HIJACKTHIS.EXE

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk
O2 - BHO: CleanMyPC Popup Blocker - {7A9BC6B1-7F27-47c6-A66D-13582E81E537} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBHO.DLL
O3 - Toolbar: CleanMyPC Toolbar - {04164EC4-1E48-4279-818E-3721931E7636} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBAR.DLL
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [PCHealth] C:\WINDOWS\PCHealth\Support\PCHSchd.exe -s
O4 - HKLM\..\Run: [IrMon] irmon.exe
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [SiS Windows KeyHook] C:\WINDOWS\SYSTEM\keyhook.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGCC.EXE /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGEMC.EXE
O4 - HKLM\..\Run: [AVG7_AMSVR] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGAMSVR.EXE
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKLM\..\RunServices: [*StateMgr] C:\WINDOWS\System\Restore\StateMgr.exe
O4 - HKCU\..\Run: [SpySweeper] C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe /0
O4 - Startup: Utility Tray.lnk = C:\WINDOWS\SYSTEM\sistray.exe
O4 - Startup: WinZip Quick Pick.lnk = D:\Stuff\Utils\WinZip\WZQKPICK.EXE
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab

As I thought it's back. It reactivated when I opened IE

Logfile of HijackThis v1.99.1
Scan saved at 16:17:11, on 01/03/2005
Platform: Windows ME (Win9x 4.90.3000)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\MSTASK.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\IRMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WINDOWS\RUNDLL32.EXE
C:\WINDOWS\SYSTEM\KEYHOOK.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGCC.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGEMC.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGAMSVR.EXE
C:\PROGRAM FILES\WEBROOT\SPY SWEEPER\SPYSWEEPER.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\WINDOWS\SYSTEM\SISTRAY.EXE
D:\STUFF\UTILS\WINZIP\WZQKPICK.EXE
C:\WINDOWS\SYSTEM\RESTORE\STMGR.EXE
C:\PROGRAM FILES\SHAREAZA\SHAREAZA.EXE
C:\PROGRAM FILES\SOULSEEK\SLSK.EXE
C:\PROGRAM FILES\AHEAD\NERO STARTSMART\NEROSTARTSMART.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
C:\PROGRAM FILES\AHEAD\NERO\NERO.EXE
D:\HIJACK\HIJACKTHIS.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\TEMP\se.dll/sp.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\TEMP\se.dll/sp.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
O2 - BHO: CleanMyPC Popup Blocker - {7A9BC6B1-7F27-47c6-A66D-13582E81E537} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBHO.DLL
O2 - BHO: (no name) - {D7DB6EF2-8B6A-4B19-BBB7-0B68D670B001} - C:\WINDOWS\SYSTEM\LEHJ.DLL
O3 - Toolbar: CleanMyPC Toolbar - {04164EC4-1E48-4279-818E-3721931E7636} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBAR.DLL
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [PCHealth] C:\WINDOWS\PCHealth\Support\PCHSchd.exe -s
O4 - HKLM\..\Run: [IrMon] irmon.exe
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [SiS Windows KeyHook] C:\WINDOWS\SYSTEM\keyhook.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGCC.EXE /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGEMC.EXE
O4 - HKLM\..\Run: [AVG7_AMSVR] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGAMSVR.EXE
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKLM\..\RunServices: [*StateMgr] C:\WINDOWS\System\Restore\StateMgr.exe
O4 - HKCU\..\Run: [SpySweeper] C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe /0
O4 - Startup: Utility Tray.lnk = C:\WINDOWS\SYSTEM\sistray.exe
O4 - Startup: WinZip Quick Pick.lnk = D:\Stuff\Utils\WinZip\WZQKPICK.EXE
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O18 - Filter: text/html - {C5ACF601-88C3-4513-B682-25629CCC8D66} - C:\WINDOWS\SYSTEM\LEHJ.DLL
O18 - Filter: text/plain - {C5ACF601-88C3-4513-B682-25629CCC8D66} - C:\WINDOWS\SYSTEM\LEHJ.DLL

Close all browser windows, restart Hijack This and put a checkmark next to the following entries:

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\TEMP\se.dll/sp.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\TEMP\se.dll/sp.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
O2 - BHO: (no name) - {D7DB6EF2-8B6A-4B19-BBB7-0B68D670B001} - C:\WINDOWS\SYSTEM\LEHJ.DLL
O18 - Filter: text/html - {C5ACF601-88C3-4513-B682-25629CCC8D66} - C:\WINDOWS\SYSTEM\LEHJ.DLL
O18 - Filter: text/plain - {C5ACF601-88C3-4513-B682-25629CCC8D66} - C:\WINDOWS\SYSTEM\LEHJ.DLL

Click Fix Checked

Download the Pocket Killbox from here.

Unzip it and run the program.

Put a check in the Delete on Reboot box.

Enter each of these lines into the white box one by one and then press the red X button. If firsts asks to confirm the deletion after each entry is added and the red X is pressed, you need to click yes, but it also asks if you want to Reboot. Click No each time until the last entries been entered.

C:\WINDOWS\SYSTEM\LEHJ.DLL

When KillBox has rebooted your system, download and run CCleaner. Post a fresh log.

Did what you said to. I keep getting an msn sign up box pop up every time I boot up I dont suppose you'd know how to disable it?

Logfile of HijackThis v1.99.1
Scan saved at 12:24:22, on 03/03/2005
Platform: Windows ME (Win9x 4.90.3000)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\MSTASK.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\IRMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WINDOWS\RUNDLL32.EXE
C:\WINDOWS\SYSTEM\KEYHOOK.EXE
C:\WINDOWS\SYSTEM\PSTORES.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGCC.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGEMC.EXE
C:\PROGRAM FILES\GRISOFT\AVG FREE\AVGAMSVR.EXE
C:\PROGRAM FILES\WEBROOT\SPY SWEEPER\SPYSWEEPER.EXE
C:\WINDOWS\SYSTEM\RESTORE\STMGR.EXE
C:\WINDOWS\SYSTEM\SISTRAY.EXE
D:\STUFF\UTILS\WINZIP\WZQKPICK.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
D:\HIJACK\HIJACKTHIS.EXE

O2 - BHO: CleanMyPC Popup Blocker - {7A9BC6B1-7F27-47c6-A66D-13582E81E537} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBHO.DLL
O3 - Toolbar: CleanMyPC Toolbar - {04164EC4-1E48-4279-818E-3721931E7636} - C:\PROGRAM FILES\CLEANMYPC POPUP BLOCKER\CLEANBAR.DLL
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [PCHealth] C:\WINDOWS\PCHealth\Support\PCHSchd.exe -s
O4 - HKLM\..\Run: [IrMon] irmon.exe
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [SiS Windows KeyHook] C:\WINDOWS\SYSTEM\keyhook.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGCC.EXE /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGEMC.EXE
O4 - HKLM\..\Run: [AVG7_AMSVR] C:\PROGRA~1\GRISOFT\AVGFRE~1\AVGAMSVR.EXE
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKLM\..\RunServices: [*StateMgr] C:\WINDOWS\System\Restore\StateMgr.exe
O4 - HKCU\..\Run: [SpySweeper] C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe /0
O4 - Startup: Utility Tray.lnk = C:\WINDOWS\SYSTEM\sistray.exe
O4 - Startup: WinZip Quick Pick.lnk = D:\Stuff\Utils\WinZip\WZQKPICK.EXE
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab

It's back. Same hijack log as before apart from the name of the dll. I wasn't on the internet and didn't open anything I was playing Warcraft and AVG popped up as did spyware sweeper. Shortly afterwards I got a error message saying wuauboot has caused an error in <unknown>, don't know if thats got anything to do with it.