It doesn't matter what i set my homepage to, whether it be google or yahoo. When i close the browser and then open it again my homepage changes to 'about:blank'.

it also does it randomly sometimes

heres my hijackthis log: -

Logfile of HijackThis v1.97.7
Scan saved at 6:01:03 PM, on 8/9/2004
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2600.0000)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Apps\ActivBoard\nhksrv.exe
C:\WINDOWS\System32\alg.exe
C:\PROGRA~1\COMMON~1\AOL\ACS\AOLacsd.exe
C:\WINDOWS\System32\cisvc.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\system32\slserv.exe
C:\PROGRA~1\NORTON~1\navapw32.exe
C:\Apps\ActivBoard\TrayMon.exe
C:\Program Files\Real\RealPlayer\RealPlay.exe
C:\Apps\ActivBoard\OSD.exe
C:\Program Files\MUSICMATCH\MUSICMATCH Jukebox\mm_tray.exe
C:\Program Files\Excite\PrvtMsgr\bin\x8IMPipe.exe
C:\Program Files\Roxio\Easy CD Creator 6\AudioCentral\RxMon.exe
C:\Program Files\BT Voyager 105 ADSL Modem\dslstat.exe
C:\Program Files\BT Voyager 105 ADSL Modem\dslagent.exe
C:\Program Files\VoyagerTest\fts.exe
C:\Program Files\Common Files\AOL\ACS\AOLDial.exe
C:\Program Files\AOL 9.0\aoltray.exe
C:\Program Files\Common Files\Microsoft Shared\Works Shared\wkcalrem.exe
C:\Program Files\Microsoft Office\Office\OSA.EXE
C:\Program Files\WinZip\WZQKPICK.EXE
C:\Program Files\Roxio\Easy CD Creator 6\AudioCentral\Playlist.exe
C:\WINDOWS\System32\wbem\wmiprvse.exe
C:\WINDOWS\System32\cidaemon.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Spyware Stormer\SpywareStormer.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\AOL 9.0\waol.exe
C:\Program Files\Common Files\AOL\aoltpspd.exe
C:\Program Files\Ad-Eliminator\ad-eliminator.exe
C:\Program Files\Ad-Eliminator\ad-eliminator.exe
C:\WINDOWS\explorer.exe
C:\WINDOWS\regedit.exe
C:\Documents and Settings\Jonny\Desktop\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = file://C:\DOCUME~1\Jonny\LOCALS~1\Temp\sp.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = file://C:\DOCUME~1\Jonny\LOCALS~1\Temp\sp.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = file://C:\DOCUME~1\Jonny\LOCALS~1\Temp\sp.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = file://C:\DOCUME~1\Jonny\LOCALS~1\Temp\sp.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = file://C:\DOCUME~1\Jonny\LOCALS~1\Temp\sp.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = file://C:\DOCUME~1\Jonny\LOCALS~1\Temp\sp.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
F2 - REG:system.ini: UserInit=C:\WINDOWS\System32\Userinit.exe
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\apps\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O2 - BHO: (no name) - {E324BFC3-E55D-4652-99A0-F691C62FD86D} - C:\WINDOWS\System32\fhbc.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [ACTIVBOARD] C:\Apps\ActivBoard\MMKeybd.exe
O4 - HKLM\..\Run: [iamapp] C:\Program Files\Norton Internet Security\IAMAPP.EXE
O4 - HKLM\..\Run: [NAV Agent] C:\PROGRA~1\NORTON~1\navapw32.exe
O4 - HKLM\..\Run: [DSLSTATEXE] C:\Program Files\BT Voyager 105 ADSL Modem\dslstat.exe icon
O4 - HKLM\..\Run: [DSLAGENTEXE] C:\Program Files\BT Voyager 105 ADSL Modem\dslagent.exe
O4 - HKLM\..\Run: [%FP%Friendly fts.exe] "C:\Program Files\VoyagerTest\fts.exe"
O4 - HKLM\..\Run: [AOLDialer] C:\Program Files\Common Files\AOL\ACS\AOLDial.exe
O4 - HKCU\..\Run: [SpywareGuard] C:\WINDOWS\system32\deinst_qfe001.exe
O4 - HKCU\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe" /0
O4 - HKLM\..\RunOnce: [ws_uninst] C:\DOCUME~1\Jonny\LOCALS~1\Temp\ws_uninst.exe -s
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
O9 - Extra button: Real.com (HKLM)
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Windows Messenger (HKLM)
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: Yahoo! Blackjack - http://download.games.yahoo.com/game...ts/y/jt0_x.cab
O16 - DPF: Yahoo! Pool 2 - http://download.games.yahoo.com/game...s/y/pote_x.cab
O16 - DPF: {315D1BD2-0165-48AE-9F91-9CC271704FBA} - file://Q:\Webfiles\LRN Viewer\HTML\lrniehlp.cab
O16 - DPF: {33564D57-0000-0010-8000-00AA00389B71} - http://download.microsoft.com/downlo...22/wmv9VCM.CAB
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/s...sh/swflash.cab
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} - http://fdl.msn.com/public/chat/msnchat45.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{1EB7B702-66CF-4163-98E3-26E54FC66418}: NameServer = 195.93.50.134

any help would be great

try installing a few of the other programs listed here: http://www.daniweb.com/techtalkforums/thread5690.html

especially cwshredder, adaware, spybot.

If that fails you might want to read this thread:
http://www.daniweb.com/techtalkforums/thread7507.html

nice one mate, that cwshredder seemed to have done the trick

brill
Excellent little tool.