Virus backdoor

Bonjour,je vous ecris en esperant trouver un peu t'aide,puisque en effet depuis 2jours je suis infecté par un spyware(backdoor.agent.aju) et je ne sais pas du tout commment faire pour supprimer ce programe qui sevis en plus sur mon fond d'ecran...alors s'il vous plais je vous demanderez un petit coup de main,merci...
ps:dsl pour les fautes.

VOILA les resultats

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 18:07:37, on 06/06/2008
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
Boot mode: Safe mode

Running processes:
C:\WINDOWS.1\System32\smss.exe
C:\WINDOWS.1\system32\csrss.exe
C:\WINDOWS.1\system32\winlogon.exe
C:\WINDOWS.1\system32\services.exe
C:\WINDOWS.1\system32\lsass.exe
C:\WINDOWS.1\system32\svchost.exe
C:\WINDOWS.1\system32\svchost.exe
C:\Documents and Settings\Spyware Doctor\pctsAuxs.exe
C:\Documents and Settings\Spyware Doctor\pctsSvc.exe
C:\WINDOWS.1\Explorer.EXE
C:\Documents and Settings\Spyware Doctor\pctsTray.exe
C:\Documents and Settings\Administrateur\Mes documents\HiJackThis.exe
C:\WINDOWS.1\System32\wbem\wmiprvse.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = https://actus.sfr.fr
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = file://c:/windows/homepage.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = file://c:/windows/homepage.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = file://c:/windows/homepage.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = file://c:/windows/homepage.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = file://c:/windows/homepage.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = file://c:/windows/homepage.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = https://actus.sfr.fr
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: SweetIM For Internet Explorer - {BC4FFE41-DE9F-46fa-B455-AAD49B9F9938} - C:\Program Files\Macrogaming\SweetIMBarForIE\toolbar.dll (file missing)
O2 - BHO: SWEETIE - {1A0AADCD-3A72-4b5f-900F-E3BB5A838E2A} - C:\PROGRA~1\MACROG~1\SWEETI~1\toolbar.dll (file missing)
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: ST - {9394EDE7-C8B5-483E-8773-474BF36AF6E4} - C:\Program Files\MSN Apps\ST\01.03.0000.1005\en-xu\stmain.dll
O2 - BHO: MSNToolBandBHO - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.5000.1021\fr\msntb.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS.1\System32\msdxm.ocx
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.5000.1021\fr\msntb.dll
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 /WAITFORSW
O4 - HKLM\..\Run: [F-Secure Startup Wizard] "C:\Program Files\Securitoo\Av_Fw\FSGUI\FSSW.EXE" /reboot
O4 - HKLM\..\Run: [FSASWREG] "C:\Program Files\Securitoo\Av_Fw\Anti-Spyware\fsaswreg.exe"
O4 - HKLM\..\Run: [ScanRegistry] C:\W
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_03\bin\jusched.exe
O4 - HKLM\..\Run: [msvcc25] svcchost.exe
O4 - HKLM\..\Run: [Windows Config System] config.exe
O4 - HKLM\..\Run: [BDMCon] C:\Program Files\Softwin\BitDefender Free Edition\\bdmcon.exe
O4 - HKLM\..\Run: [BDNewsAgent] C:\Program Files\Softwin\BitDefender Free Edition\\bdnagent.exe
O4 - HKLM\..\Run: [ZSScheduler] "C:\Documents and Settings\Administrateur\Mes documents\ZeroSpyware\ZSLoader.exe" -STARTUP
O4 - HKLM\..\Run: [ISTray] "C:\Documents and Settings\Spyware Doctor\pctsTray.exe"
O4 - HKLM\..\RunServices: [msvcc25] svcchost.exe
O4 - HKLM\..\RunServices: [Windows Config System] config.exe
O4 - HKCU\..\Run: [MsnMsgr] ~"C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [updateMgr] "C:\Program Files\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe" AcRdB7_0_8 -reboot 1
O4 - Startup: OpenOffice.org 2.2.lnk = C:\Program Files\OpenOffice.org 2.2\program\quickstart.exe
O4 - Global Startup: Sagem - Utilitaire réseau pour Clé USB Wi-Fi 802.11g.lnk = ?
O14 - IERESET.INF: START_PAGE_URL=about:blank
O16 - DPF: Interface Chat Voila - http://chat14.x-echo.com/version7/Applet/vchatsign.cab
O16 - DPF: Yahoo! Blackjack - http://download2.games.yahoo.com/games/clients/y/jt0_x.cab
O16 - DPF: Yahoo! Hearts - http://download2.games.yahoo.com/games/clients/y/ht1_x.cab
O16 - DPF: Yahoo! Literati - http://download2.games.yahoo.com/games/clients/y/tt5_x.cab
O16 - DPF: Yahoo! Pool 2 - http://download2.games.yahoo.com/games/clients/y/poti_x.cab
O16 - DPF: Yahoo! Pyramids - http://download2.games.yahoo.com/games/clients/y/pyt1_x.cab
O16 - DPF: {00B71CFB-6864-4346-A978-C0A14556272C} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab31267.cab
O16 - DPF: {14B87622-7E19-4EA8-93B3-97215F77A6BC} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab31267.cab
O16 - DPF: {2357B3CF-7F8D-4451-8D81-FD6097610AEE} (CamfrogWEB Advanced Unicode Control) - http://activex.camfrogweb.com/advanced/2.0.1.14/cfweb_activex.camfrogweb.com-advanced-2.0.1.14_instmodule.exe
O16 - DPF: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/FR-FR/a-UNO1/GAME_UNO1.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/...
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {8EB3FF4E-86A1-4717-884D-7BA2D38272CB} (F-Secure Online Scanner) - https://www.nordnet.com/securite
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (ZoneIntro Class) - http://messenger.zone.msn.com/binary/ZIntro.cab53083.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O16 - DPF: {F6BF0D00-0B2A-4A75-BF7B-F385591623AF} (Solitaire Showdown Class) - http://messenger.zone.msn.com/binary/SolitaireShowdown.cab31267.cab
O23 - Service: Microsoft ASPI Manager (aspimgr) - Unknown owner - C:\WINDOWS.1\System32\aspimgr.exe (file missing)
O23 - Service: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
O23 - Service: F-Secure Anti-Virus Firewall Daemon (FSDFWD) - F-Secure Corporation - C:\Program Files\Securitoo\Av_Fw\FWES\Program\fsdfwd.exe
O23 - Service: F-Secure Management Agent (FSMA) - F-Secure Corporation - C:\Program Files\Securitoo\Av_Fw\Common\FSMA32.EXE
O23 - Service: PC Tools Auxiliary Service (sdAuxService) - PC Tools - C:\Documents and Settings\Spyware Doctor\pctsAuxs.exe
O23 - Service: PC Tools Security Service (sdCoreService) - PC Tools - C:\Documents and Settings\Spyware Doctor\pctsSvc.exe
O23 - Service: Moteur Webroot Spy Sweeper (WebrootSpySweeperService) - Webroot Software, Inc. - C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
O23 - Service: BitDefender Communicator (XCOMM) - Softwin - C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe