J'ai un virus et je ne sais pas comment le su

ca marche un tres grand merci a toi de m'avoir aider

Merci pour ta réponse très rapide - suis nouvelle venue sur le site

Voici le logfile - il est long - A +:

Logfile of HijackThis v1.99.1
Scan saved at 17:43:46, on 14/05/2005
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\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\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\Ati2evxx.exe
C:\WINDOWS\system32\cisvc.exe
C:\WINDOWS\System32\CTsvcCDA.EXE
C:\Norman\Bin\Zanda.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Creative\ShareDLL\CtNotify.exe
C:\Program Files\Creative\SBLive\AudioHQ\AHQTB.EXE
C:\Program Files\Creative\ShareDLL\MediaDet.Exe
C:\WINDOWS\System32\devldr32.exe
C:\Program Files\ahead\InCD\InCD.exe
C:\Norman\bin\ZLH.EXE
C:\WINDOWS\System32\MSMSN7.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\WINDOWS\System32\MSMSN7.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\System32\MsPMSPSv.exe
C:\Norman\Nvc\BIN\NIP.EXE
C:\Norman\Nvc\bin\nvcoas.exe
C:\Norman\Nvc\BIN\nipsvc.exe
C:\Norman\Nvc\bin\cclaw.exe
C:\Norman\bin\NJEEVES.EXE
C:\WINDOWS\System32\wpabaln.exe
C:\WINDOWS\system32\cidaemon.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Outlook Express\msimn.exe
C:\Norman\NVC\Bin\Nvcut.exe
C:\Program Files\Opera\Opera.exe
C:\Documents and Settings\FILOU\Local Settings\Temp\Répertoire temporaire 3 pour hijackthis.zip\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.neuf.fr
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.neuf.fr
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: (no name) - _{CFBFAE00-17A6-11D0-99CB-00C04FD64497} - (no file)
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: BAHelper Class - {A3FDD654-A057-4971-9844-4ED8E67DBBB8} - C:\Program Files\SideFind\sfbho.dll (file missing)
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [Disc Detector] C:\Program Files\Creative\ShareDLL\CtNotify.exe
O4 - HKLM\..\Run: [AHQInit] C:\Program Files\Creative\SBLive\Program\AHQInit.exe
O4 - HKLM\..\Run: [AudioHQ] C:\Program Files\Creative\SBLive\AudioHQ\AHQTB.EXE
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [InCD] C:\Program Files\ahead\InCD\InCD.exe
O4 - HKLM\..\Run: [Norman ZANDA] C:\Norman\bin\ZLH.EXE /LOAD /SPLASH
O4 - HKLM\..\Run: [Sygate Personal Firewall] MSNMSGRS.exe
O4 - HKLM\..\Run: [CTRegRun] C:\WINDOWS\CTRegRun.EXE
O4 - HKLM\..\Run: [MS MSN Menssenger 7.0] MSMSN7.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [UpdReg] C:\WINDOWS\Updreg.exe
O4 - HKLM\..\Run: [Zone Labs Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\RunServices: [MS MSN Menssenger 7.0] MSMSN7.exe
O4 - HKLM\..\RunServices: [Sygate Personal Firewall] MSNMSGRS.exe
O4 - HKCU\..\Run: [MS MSN Menssenger 7.0] MSMSN7.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [snapple] snapple.exe
O4 - HKCU\..\Run: [Starting up] wvsvc.exe
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKCU\..\Run: [Sygate Personal Firewall] MSNMSGRS.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O9 - Extra button: SideFind - {10E42047-DEB9-4535-A118-B3F6EC39B807} - C:\Program Files\SideFind\sidefind.dll (file missing)
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
O15 - Trusted Zone: http://ny.contentmatch.net (HKLM)
O15 - ProtocolDefaults: 'http' protocol is in My Computer Zone, should be Internet Zone
O16 - DPF: {9B03C5F1-F5AB-47EE-937D-A8EDA626F876} (Anonymizer Anti-Spyware Scanner) - http://download.zonelabs.com/bin/promotions/spywaredetector/WebAAS.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{10E12700-5CB9-43F6-BC38-30F91F9494A8}: NameServer = 80.118.196.41 80.118.192.111
O17 - HKLM\System\CS1\Services\Tcpip\..\{10E12700-5CB9-43F6-BC38-30F91F9494A8}: NameServer = 80.118.196.41 80.118.192.111
O17 - HKLM\System\CS2\Services\Tcpip\..\{10E12700-5CB9-43F6-BC38-30F91F9494A8}: NameServer = 80.118.192.100 80.118.196.36
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\System32\CTsvcCDA.EXE
O23 - Service: Norman API-hooking helper (NipSvc) - Unknown owner - C:\Norman\Nvc\BIN\nipsvc.exe
O23 - Service: Norman NJeeves - Unknown owner - C:\Norman\bin\NJEEVES.EXE
O23 - Service: Norman ZANDA - Unknown owner - C:\Norman\Bin\Zanda.exe
O23 - Service: Norman Virus Control on-access component (nvcoas) - Norman ASA - C:\Norman\Nvc\bin\nvcoas.exe
O23 - Service: Norman Virus Control Scheduler (NVCScheduler) - Norman Data Defense Systems - C:\Norman\Nvc\BIN\NVCSCHED.EXE
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs Inc. - C:\WINDOWS\system32\ZoneLabs\vsmon.exe