Galère de virus!!!

Bonjour à tous,
voila j'ai chopé un virus signalé par avast avec le nom de win32:kreper-C[Trj] qui me remplace ma page de démarrage internet par http://t.swapx.cc/h.php?aid=20009
je poste un log de hijackthis pr celui qui veut bien m'aider ds cette galère... merci

Logfile of HijackThis v1.98.2
Scan saved at 01:17:02, on 27/11/2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\Program Files\ltmoh\Ltmoh.exe
C:\Program Files\TOSHIBA\ConfigFree\CFSvcs.exe
C:\WINDOWS\AGRSMMSG.exe
C:\WINDOWS\System32\TPSMain.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\TOSHIBA\Commandes TOSHIBA\TFncKy.exe
C:\WINDOWS\System32\TPSBattM.exe
C:\Program Files\Toshiba\Toshiba Applet\thotkey.exe
C:\Program Files\Real\RealPlayer\RealPlay.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Documents and Settings\noureddine\Mes documents\Prog's\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://win-eto.com/hp.htm?id=191
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {467FAEB2-5F5B-4c81-BAE0-2A4752CA7F4E} - C:\WINDOWS\System32\.dll (file missing)
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [LtMoh] C:\Program Files\ltmoh\Ltmoh.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [TPSMain] TPSMain.exe
O4 - HKLM\..\Run: [TFncKy] TFncKy.exe
O4 - HKLM\..\Run: [THotkey] C:\Program Files\Toshiba\Toshiba Applet\thotkey.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [RealTray] C:\Program Files\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\System32\Shdocvw.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2004061001/housecall.trendmicro.com/housecall/xscan53.cab
O20 - AppInit_DLLs: uly1okbplc5ebydll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll.dll