I have Adssite advanced toolbar and Adssite Browser Optimizer. I cannot remove it thru any spyware,antivirus,or remove program tool that i have.
Here is my Hijack this log:

Logfile of Trend Micro HijackThis v2.0.0 (BETA)
Scan saved at 10:45:47 PM, on 9/21/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
C:\WINDOWS\system32\CTsvcCDA.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\runservice.exe
C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\Grisoft\AVG7\avgcc.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\LogMeIn\LogMeInSystray.exe
C:\Program Files\Canon\MyPrinter\BJMyPrt.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Creative\Sync Manager Unicode\CTSyncU.exe
C:\Program Files\Yahoo!\Yahoo! Music Jukebox\ymetray.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\WINDOWS\system32\rundll32.exe
C:\Documents and Settings\Mike\Desktop\HiJackThis_v2.exe

R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://windowsupdate.microsoft.com/
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O2 - BHO: adssite - {F31B3634-12AA-41ca-B021-0685C3B3E4CA} - C:\WINDOWS\system32\nsv55E.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: Adssite Toolbar - {41C29B07-6F91-4966-91BE-2E2841643C83} - C:\Program Files\Adssite Advanced Toolbar\toolbar.dll
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVG7\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [Windows Defender] "C:\Program Files\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [LogMeIn GUI] "C:\Program Files\LogMeIn\LogMeInSystray.exe"
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [NapsterShell] C:\Program Files\Napster\napster.exe /systray
O4 - HKLM\..\Run: [CanonMyPrinter] C:\Program Files\Canon\MyPrinter\BJMyPrt.exe /logon
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [CTSyncU.exe] "C:\Program Files\Creative\Sync Manager Unicode\CTSyncU.exe"
O4 - HKCU\..\Run: [igndlm.exe] C:\Program Files\IGN\Download Manager\DLM.exe /windowsstart /startifwork
O4 - HKUS\S-1-5-19\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-18\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [AVG7_Run] C:\PROGRA~1\Grisoft\AVG7\avgw.exe /RUNONCE (User 'Default user')
O4 - Global Startup: ymetray.lnk = C:\Program Files\Yahoo!\Yahoo! Music Jukebox\ymetray.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: PartyCasino.com - {B4B52284-A248-4c51-9F7C-F0A0C67FCC9D} - C:\Program Files\PartyGaming\PartyCasino\RunCasino.exe (file missing)
O9 - Extra 'Tools' menuitem: PartyCasino.com - {B4B52284-A248-4c51-9F7C-F0A0C67FCC9D} - C:\Program Files\PartyGaming\PartyCasino\RunCasino.exe (file missing)
O9 - Extra button: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyGaming\PartyPoker\RunApp.exe (file missing)
O9 - Extra 'Tools' menuitem: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyGaming\PartyPoker\RunApp.exe (file missing)
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra button: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\Program Files\Yahoo!\Messenger\YahooMessenger.exe
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\Program Files\Yahoo!\Messenger\YahooMessenger.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsu...?1145141806906
O22 - SharedTaskScheduler: Browseui preloader - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\System32\browseui.dll
O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\System32\browseui.dll
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTsvcCDA.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1150\Intel 32\IDriverT.exe
O23 - Service: LicCtrl Service (LicCtrlService) - Unknown owner - C:\WINDOWS\runservice.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe

--
End of file - 7103 bytes

If you have adssite program in your add/remove program, have you tried uninstalling from there?

If it is there and will not uninstall, try this:



Now reboot into safe mode by tapping your F8 key upon restart and safe mode screen appears, select safe mode and press enter.


Now try uninstalling from safe mode if there and uninstalable from normal mode.




Open Hijackthis.

Click the "Open the Misc Tools" section Button.

Click the "Open Uninstall Manager" Button.

Click the "Save list..." Button.

Save it to your desktop. Copy and paste the contents into your reply.




Download and scan with SUPERAntiSypware Free for Home Users

Here: www.superantispyware.com/

Double-click SUPERAntiSypware.exe and use the default settings for installation.

An icon will be created on your desktop. Double-click that icon to launch the program.
If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download and unzip them from here.)
Under "Configuration and Preferences", click the Preferences button.
Click the Scanning Control tab.
Under Scanner Options make sure the following are checked (leave all others unchecked):

Close browsers before scanning.
Scan for tracking cookies.
Terminate memory threats before quarantining.

Click the "Close" button to leave the control center screen.
Back on the main screen, under "Scan for Harmful Software" click Scan your computer.

On the left, make sure you check C:\Fixed Drive.
On the right, under "Complete Scan", choose Perform Complete Scan.

Click "Next" to start the scan. Please be patient while it scans your computer.

After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".

Make sure everything has a checkmark next to it and click "Next".

A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.

If asked if you want to reboot, click "Yes".

To retrieve the removal information after reboot, launch SUPERAntispyware again.
Click Preferences, then click the Statistics/Logs tab.
Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
Please copy and paste the Scan Log results in your next reply with a new hijackthis log.

Click Close to exit the program.