Hi there, thankyou very much for helping with this problem. I'm afraid this is all new to me (though very interesting!).
My computer runs Windows 2000, and recently it started getting loads of pop ups. I've used Spybot for the last year or so, so I just ran that.
It detected something called Network Monitor and something called Command Service, but couldn't get rid of them.

I also had problems with SurfSidekick, but I managed to get rid of that using the Symantec website.

I saw lots of similar threads on this forum, and installed HJT and l2mefix. Nothing seems to have worked though, so I guess my problems are slightly different from the others.
Here's the HJT log, I hope that's what you need, otherwise let me know.
Thanks again
K

Logfile of HijackThis v1.99.1
Scan saved at 1:13:06 PM, on 2/16/2006
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\csrss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
C:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe
C:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\VGlt\command.exe
C:\WINNT\system32\svchost.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\Program Files\Network Monitor\netmon.exe
C:\Program Files\Norton AntiVirus\IWP\NPFMntor.exe
C:\Program Files\Norton SystemWorks\Norton Utilities\NPROTECT.EXE
C:\WINNT\system32\MSTask.exe
C:\Program Files\Norton SystemWorks\Norton Speed Disk\nopdb.exe
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\WINNT\nav32.exe
C:\WINNT\Explorer.EXE
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\notepad.exe
C:\Program Files\NETGEAR\WG511\Utility\WG511WLU.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Java\jre1.5.0_02\bin\jusched.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Thomson\SpeedTouch USB\Dragdiag.exe
C:\windows\winsysban9.exe
C:\Program Files\Common Files\Symantec Shared\SymTray.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\PROGRA~1\WINZIP\winzip32.exe
C:\Documents and Settings\Tim\Local Settings\Temp\HijackThis.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.wanadoo.co.uk/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://searchbar.findthewebsiteyouneed.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = www.hotmail.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://searchbar.findthewebsiteyouneed.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = \blank.htm
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = \blank.htm
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\system32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [WG511WLU] C:\Program Files\NETGEAR\WG511\Utility\WG511WLU.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_02\bin\jusched.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [SpeedTouch USB Diagnostics] "C:\Program Files\Thomson\SpeedTouch USB\Dragdiag.exe" /icon
O4 - HKLM\..\Run: [winsysupd] C:\windows\winsysupd9.exe
O4 - HKLM\..\Run: [winsysban] C:\windows\winsysban9.exe
O4 - HKLM\..\Run: [SymTray - Norton SystemWorks] C:\Program Files\Common Files\Symantec Shared\SymTray.exe "Norton SystemWorks"
O4 - HKLM\..\Run: [gimmygames] C:\windows\gimmygames9.exe
O4 - Startup: Norton System Doctor.lnk = C:\Program Files\Norton SystemWorks\Norton Utilities\SYSDOC32.EXE
O8 - Extra context menu item: &Google Search - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: &Translate English Word - res://C:\Program Files\Google\GoogleToolbar1.dll/cmwordtrans.html
O8 - Extra context menu item: Backward Links - res://C:\Program Files\Google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://C:\Program Files\Google\GoogleToolbar1.dll/cmcache.html
O8 - Extra context menu item: Similar Pages - res://C:\Program Files\Google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Translate Page into English - res://C:\Program Files\Google\GoogleToolbar1.dll/cmtrans.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM\aim.exe
O14 - IERESET.INF: START_PAGE_URL=http://www.wanadoo.co.uk/
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsu...?1140046040188
O20 - Winlogon Notify: WindowsUpdate - C:\WINNT\system32\fpj6031se.dll (file missing)
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
O23 - Service: Command Service (cmdService) - Unknown owner - C:\WINNT\VGlt\command.exe
O23 - Service: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Norton AntiVirus Auto-Protect Service (navapsvc) - Symantec Corporation - C:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: Network Monitor - Unknown owner - C:\Program Files\Network Monitor\netmon.exe
O23 - Service: Norton AntiVirus Firewall Monitor Service (NPFMntor) - Symantec Corporation - C:\Program Files\Norton AntiVirus\IWP\NPFMntor.exe
O23 - Service: Norton Unerase Protection (NProtectService) - Symantec Corporation - C:\Program Files\Norton SystemWorks\Norton Utilities\NPROTECT.EXE
O23 - Service: SAVScan - Symantec Corporation - C:\Program Files\Norton AntiVirus\SAVScan.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\COMMON~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Speed Disk service - Symantec Corporation - C:\Program Files\Norton SystemWorks\Norton Speed Disk\nopdb.exe
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
O23 - Service: windows virus scanner (windows antivirus) - Unknown owner - C:\WINNT\nav32.exe