Hi,
Can anybody help me. I've spent all day trying to get rid of this annoying problem, using loads of tips and downloads from various websites. Still, this annoyance persists. I've copied my log report below. if anyone can make sense of it and talk me through what to do, i would be hugely grateful.

Thanks in advance for your help.

Logfile of HijackThis v1.99.0
Scan saved at 00:12:44, on 10/04/2005
Platform: Windows ME (Win9x 4.90.3000)
MSIE: Internet Explorer v5.50 (5.50.4134.0100)

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:\PROGRAM FILES\MCAFEE.COM\VSO\MCVSRTE.EXE
C:\WINDOWS\SYSTEM\KB891711\KB891711.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\SYSTEM\RESTORE\STMGR.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WANADOO\WANADOOCONNECTIONKIT\ATDIALLER1.EXE
C:\PROGRAM FILES\MCAFEE.COM\VSO\MCVSSHLD.EXE
C:\PROGRAM FILES\MCAFEE.COM\VSO\MCVSESCN.EXE
C:\PROGRAM FILES\MCAFEE.COM\AGENT\MCAGENT.EXE
C:\PROGRAM FILES\MCAFEE.COM\PERSONAL FIREWALL\MPFTRAY.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\PROGRAM FILES\MCAFEE.COM\MPS\MSCIFAPP.EXE
C:\WINDOWS\SYSTEM\RNAAPP.EXE
C:\PROGRAM FILES\MCAFEE\SPAMKILLER\MSKSRVR.EXE
C:\PROGRAM FILES\MCAFEE\SPAMKILLER\MSKAGENT.EXE
C:\WINDOWS\SYSTEM\TAPISRV.EXE
C:\PROGRAM FILES\MCAFEE.COM\AGENT\MCREGWIZ.EXE
C:\PROGRAM FILES\MCAFEE\MCAFEE QUICKCLEAN\PLGUNI.EXE
C:\PROGRAM FILES\MCAFEE.COM\PERSONAL FIREWALL\MP***ENT.EXE
C:\WINDOWS\SYSTEM\PSTORES.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
C:\WINDOWS\SLLIGHTS.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\HJT\HJT.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\system\cwhmz.dll/sp.html#28129
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\system\cwhmz.dll/sp.html#28129
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = res://C:\WINDOWS\system\cwhmz.dll/sp.html#28129
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\WINDOWS\system\cwhmz.dll/sp.html#28129
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = res://C:\WINDOWS\system\cwhmz.dll/sp.html#28129
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = res://C:\WINDOWS\system\cwhmz.dll/sp.html#28129
R3 - Default URLSearchHook is missing
O2 - BHO: Class - {4B4D6F81-35CE-A8F1-95F2-9E5F0033B541} - C:\WINDOWS\SYSTEM\IPYN.DLL
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\SYSTEM\MSDXM.OCX
O3 - Toolbar: McAfee VirusScan - {BA52B914-B692-46c4-B683-905236F6F655} - C:\PROGRAM FILES\MCAFEE.COM\VSO\MCVSSHL.DLL
O4 - HKLM\..\Run: [PCHealth] C:\WINDOWS\PCHealth\Support\PCHSchd.exe -s
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [MicroDialler] C:\Wanadoo\WanadooConnectionKit\atdialler1.exe
O4 - HKLM\..\Run: [VSOCheckTask] "C:\PROGRA~1\MCAFEE.COM\VSO\MCMNHDLR.EXE" /checktask
O4 - HKLM\..\Run: [VirusScan Online] "C:\PROGRA~1\MCAFEE.COM\VSO\mcvsshld.exe"
O4 - HKLM\..\Run: [MCAgentExe] C:\PROGRA~1\MCAFEE.COM\AGENT\mcagent.exe
O4 - HKLM\..\Run: [MCUpdateExe] C:\PROGRA~1\MCAFEE.COM\AGENT\MCUPDATE.EXE
O4 - HKLM\..\Run: [MPFExe] C:\PROGRA~1\MCAFEE.COM\PERSON~1\MPFTRAY.EXE
O4 - HKLM\..\Run: [MPSExe] C:\PROGRA~1\MCAFEE.COM\MPS\mscifapp.exe /embedding
O4 - HKLM\..\Run: [MSKServerExe] C:\Program Files\McAfee\SpamKiller\MSKSrvr.exe
O4 - HKLM\..\Run: [MSKAGENTEXE] C:\PROGRA~1\MCAFEE\SPAMKI~1\MSKAGENT.EXE
O4 - HKLM\..\Run: [MSKDetectorExe] C:\PROGRA~1\MCAFEE\SPAMKI~1\MSKDETCT.EXE /startup
O4 - HKLM\..\Run: [McRegWiz] C:\PROGRA~1\MCAFEE.COM\AGENT\MCREGWIZ.EXE /autorun
O4 - HKLM\..\Run: [RegistryMechanic] C:\Program Files\Registry Mechanic\RegMech.exe /QS
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 - HKLM\..\RunServices: [McVsRte] C:\PROGRA~1\MCAFEE.COM\VSO\mcvsrte.exe /embedding
O4 - HKLM\..\RunServices: [KB891711] C:\WINDOWS\SYSTEM\KB891711\KB891711.EXE
O4 - HKCU\..\Run: [McAfee QuickClean Imonitor] C:\Program Files\McAfee\McAfee QuickClean\Plguni.exe /START
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSEN~1\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: MSN Messenger Service - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\MESSEN~1\MSMSGS.EXE
O14 - IERESET.INF: START_PAGE_URL=http://www.wanadoo.co.uk/