j'ai tout fait comme tu ml'avais dit mais je n'arrive pas à trouver les fichiers (ntuser.exe et ntsrv.exe) et le fichier (WMCRRS.EXE) je l'ai trouvé mais je n'arrive pas a le supprimer çà me marque "Impossible de supprimerWMCRRS: cette ressource est utilisée par une autre personne ou un autre programme" je t'envoi quand même le rapport hijackthis:
Logfile of HijackThis v1.99.1
Scan saved at 17:48:25, on 27/01/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\PROGRA~1\SECURI~1\av_fw\backweb\1044199\Program\SERVIC~1.EXE
C:\Program Files\ewido anti-malware\ewidoctrl.exe
C:\Program Files\ewido anti-malware\ewidoguard.exe
C:\Program Files\Securitoo\av_fw\Anti-Virus\fsgk32st.exe
C:\Program Files\Securitoo\av_fw\Anti-Virus\FSGK32.EXE
C:\Program Files\Securitoo\av_fw\backweb\1044199\program\fsbwsys.exe
C:\Program Files\Securitoo\av_fw\fswsclds.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\Program Files\Securitoo\av_fw\Anti-Virus\fssm32.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Securitoo\av_fw\Common\FSMA32.EXE
C:\Program Files\Securitoo\av_fw\Common\FSMB32.EXE
C:\Program Files\Securitoo\av_fw\Common\FCH32.EXE
C:\Program Files\Securitoo\av_fw\Common\FAMEH32.EXE
C:\Program Files\Securitoo\av_fw\Anti-Virus\fsav32.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\Program Files\Securitoo\av_fw\DFW\Program\fsdfwd.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\PROGRA~1\Wanadoo\CnxMon.exe
C:\Program Files\Thomson\SpeedTouch USB\Dragdiag.exe
C:\PROGRA~1\Wanadoo\TaskbarIcon.exe
C:\Program Files\Securitoo\av_fw\Common\FSM32.EXE
C:\Program Files\MessengerPlus! 3\MsgPlus.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATI9CE.EXE
C:\Program Files\D-Tools\daemon.exe
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\windows\system32\hknxqabuo.exe
C:\Program Files\Securitoo\av_fw\backweb\1044199\Program\BackWeb-1044199.exe
C:\WINDOWS\system32\ctfmon.exe
C:\program files\mailskinner\mailskinner.exe
C:\Program Files\Nikon\NkView6\NkvMon.exe
C:\Hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.wanadoo.fr/go/page_recherche/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.wanadoo.fr
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.msn.fr/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Wanadoo
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Search Class - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - C:\PROGRA~1\Wanadoo\SEARCH~1.DLL
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar3.dll
O2 - BHO: ToolHelper - {BBBE1C1A-89F7-4AF6-ABD1-F8FBCFA47408} - C:\PROGRA~1\SOLUCE~1\SOLUCE~1.DLL (file missing)
O3 - Toolbar: Solucevir Toolbar - {86B676AA-2483-411B-B088-EF1ED833FF12} - C:\Program Files\Solucevir Toolbar\solucevir.dll (file missing)
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar3.dll
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [WooCnxMon] C:\PROGRA~1\Wanadoo\CnxMon.exe
O4 - HKLM\..\Run: [SpeedTouch USB Diagnostics] "C:\Program Files\Thomson\SpeedTouch USB\Dragdiag.exe" /icon
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\PROGRA~1\Wanadoo\TaskbarIcon.exe
O4 - HKLM\..\Run: [F-Secure Manager] "C:\Program Files\Securitoo\av_fw\Common\FSM32.EXE" /splash
O4 - HKLM\..\Run: [F-Secure TNB] "C:\Program Files\Securitoo\av_fw\TNB\TNBUtil.exe" /CHECKALL
O4 - HKLM\..\Run: [Win32] C:\Win32\dll\Win32k.exe -starthide C:\Win32\dll\Win32.exe -local
O4 - HKLM\..\Run: [MessengerPlus3] "C:\Program Files\MessengerPlus! 3\MsgPlus.exe"
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS\system32\PSDrvCheck.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Name of App] C:\Program Files\SAMSUNG\FW LiveUpdate\Liveupdate.exe
O4 - HKLM\..\Run: [EPSON Stylus Photo RX420 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATI9CE.EXE /P31 "EPSON Stylus Photo RX420 Series" /O6 "USB002" /M "Stylus Photo RX420"
O4 - HKLM\..\Run: [DAEMON Tools-1033] "C:\Program Files\D-Tools\daemon.exe" -lang 1033
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [hknxqabuo] c:\windows\system32\hknxqabuo.exe hknxqabuo
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [Emule_Init] C:\Program Files\emule\share.exe
O4 - HKCU\..\Run: [MailSkinner] c:\program files\mailskinner\mailskinner.exe
O4 - HKCU\..\Run: [Instant Access] rundll32.exe p2esocks_1046.dll,InstantAccess
O4 - Startup: Anti-Pub.lnk = C:\Program Files\Antipub\antipub.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: NkvMon.exe.lnk = C:\Program Files\Nikon\NkView6\NkvMon.exe
O8 - Extra context menu item: &Search - http://bar.mywebsearch.com/menusearch.html?p=ZCxdm338YYFR
O8 - Extra context menu item: &Traduire à partir de l'anglais - res://c:\program files\google\GoogleToolbar3.dll/cmwordtrans.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Pages liées - res://c:\program files\google\GoogleToolbar3.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://c:\program files\google\GoogleToolbar3.dll/cmsimilar.html
O8 - Extra context menu item: Recherche &Google - res://c:\program files\google\GoogleToolbar3.dll/cmsearch.html
O8 - Extra context menu item: Télécharger avec &BitSpirit - C:\Program Files\BitSpirit\bsurl.htm
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://c:\program files\google\GoogleToolbar3.dll/cmcache.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Messager Wanadoo - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\WANADO~1\Wanadoo Messager.exe (file missing)
O9 - Extra 'Tools' menuitem: Messager Wanadoo - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\WANADO~1\Wanadoo Messager.exe (file missing)
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - http://www.wanadoo.fr (file missing) (HKCU)
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O20 - AppInit_DLLs: MsgPlusLoader.dll
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: Securitoo AntiVirus Firewall (BackWeb Client - 1044199) - Unknown owner - C:\PROGRA~1\SECURI~1\av_fw\backweb\1044199\Program\SERVIC~1.EXE
O23 - Service: ewido security suite control - ewido networks - C:\Program Files\ewido anti-malware\ewidoctrl.exe
O23 - Service: ewido security suite guard - ewido networks - C:\Program Files\ewido anti-malware\ewidoguard.exe
O23 - Service: F-Secure Gatekeeper Handler Starter - F-Secure Corp. - C:\Program Files\Securitoo\av_fw\Anti-Virus\fsgk32st.exe
O23 - Service: F-Secure Authentication Agent (FSAA) - Unknown owner - C:\Program Files\Securitoo\av_fw\Common\FSAA.EXE (file missing)
O23 - Service: fsbwsys - F-Secure Corp. - C:\Program Files\Securitoo\av_fw\backweb\1044199\program\fsbwsys.exe
O23 - Service: F-Secure Distributed Firewall Daemon (FSDFWD) - F-Secure Corporation - C:\Program Files\Securitoo\av_fw\DFW\Program\fsdfwd.exe
O23 - Service: F-Secure Management Agent (FSMA) - F-Secure Corporation - C:\Program Files\Securitoo\av_fw\Common\FSMA32.EXE
O23 - Service: F-Secure Windows Security Center Legacy Detection Service (Fswsclds) - F-Secure Corporation - C:\Program Files\Securitoo\av_fw\fswsclds.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe