Popup woes - HijackThis log.

I'm having extreme trouble trying to rid myself of a popup. If I use the internet, every so often, an Explorer window pops up, offering me the same advert. I've tried using SpybotS&D, Ad-Aware, and Spyware Blaster, but none have fixed my problem. Could you look at my HijackThis log and offer some remedies? Thanks.

Logfile of HijackThis v1.97.7
Scan saved at 12:53:18, on 19/06/2004
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\AVPersonal\AVGUARD.EXE
C:\Program Files\AVPersonal\AVWUPSRV.EXE
C:\Program Files\Common Files\EPSON\EBAPI\SAgent2.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\PROGRA~1\AGNITUM\OUTPOS~1.0\outpost.exe
C:\WINDOWS\System32\svchost.exe
C:\Shell\GeoShell\geOloader.exe
C:\Shell\GeoShell\GeoShell.exe
C:\Program Files\Java\j2re1.4.2_04\bin\jusched.exe
C:\Program Files\AVPersonal\AVGNT.EXE
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\System32\ctfmon.exe
C:\freeserve\freeserveconnectionkit\atdialler1.exe
C:\Program Files\Miranda IM\miranda32.exe
C:\Program Files\foobar2000\foobar2000.exe
D:\Download\HijackThis.exe
C:\Program Files\Mozilla Firefox\firefox.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.freeserve.com/
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = http=http://www-cache.freeserve.com:8080;ftp=http://www-cache.freeserve.com:8080
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\WINDOWS\SYSTEM\blank.htm
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,SearchAssistant = about:blank
F0 - system.ini: Shell=C:\Shell\GeoShell\geOloader.exe
F2 - REG:system.ini: Shell=
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - (no file)
O2 - BHO: (no name) - {5FA6752A-C4A0-4222-88C2-928AE5AB4966} - C:\WINDOWS\System32\SWin32.dll
O2 - BHO: (no name) - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar3.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll (disabled by BHODemon)
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll (file missing)
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar3.dll
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [Outpost Firewall] C:\PROGRA~1\AGNITUM\OUTPOS~1.0\outpost.exe /waitservice
O4 - HKLM\..\Run: [Gnetmous] C:\Program Files\KYE\Genius PowerScroll Series Mouse\gnetmous.exe
O4 - HKLM\..\Run: [Gtwatch] C:\WINDOWS\gtwatch.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_04\bin\jusched.exe
O4 - HKLM\..\Run: [AVGCtrl] C:\Program Files\AVPersonal\AVGNT.EXE /min
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [Adstartup] C:\WINDOWS\System32\automove.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\System32\ctfmon.exe
O4 - Global Startup: Freeserve Connection Kit.lnk = C:\freeserve\freeserveconnectionkit\atdialler1.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O8 - Extra context menu item: Download using LeechGet - file://C:\Program Files\LeechGet 2004\\AddUrl.html
O8 - Extra context menu item: Download using LeechGet Wizard - file://C:\Program Files\LeechGet 2004\\Wizard.html
O8 - Extra context menu item: Parse with LeechGet - file://C:\Program Files\LeechGet 2004\\Parser.html
O9 - Extra 'Tools' menuitem: Sun Java Console (HKLM)
O9 - Extra button: ICQ (HKLM)
O9 - Extra 'Tools' menuitem: ICQ (HKLM)
O14 - IERESET.INF: START_PAGE_URL=http://www.freeserve.com/
O15 - Trusted Zone: http://www.vb4all.net
O16 - DPF: Win32 Classes -
O16 - DPF: {27527D31-447B-11D5-A46E-0001023B4289} (CoGSManager Class) - http://gamingzone-dev.ubisoft.com/dev/p...anager.cab
O16 - DPF: {2917297F-F02B-4B9D-81DF-494B6333150B} (Minesweeper Flags Class) - http://messenger.zone.msn.com/binary/MineSweeper.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2003...scan53.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/Me...Client.cab
O16 - DPF: {9F1C11AA-197B-4942-BA54-47A8489BB47F} (Update Class) - http://v4.windowsupdate.microsoft.com/C...1875694444
O16 - DPF: {AE9DCB17-F804-11D2-A44A-0020182C1446} (IntraLaunch.MainControl) - file://F:\SuperCD\IntraLaunch.CAB
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shoc...wflash.cab
O16 - DPF: {F04A8AE2-A59D-11D2-8792-00C04F8EF29D} (Hotmail Attachments Control) - http://by7fd.bay7.hotmail.msn.com/activex/HMAtchmt.ocx
O16 - DPF: {F6BF0D00-0B2A-4A75-BF7B-F385591623AF} (Solitaire Showdown Class) - http://messenger.zone.msn.com/binary/SolitaireShowdown.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{462ECA1A-0B05-4502-AAB0-DC9F29E75DCE}: NameServer = 195.92.195.95 195.92.195.94