Page qui s'installe tout seul - Hijackthis

bonjour voila depuis ce matin j'ai des pages qui me force a intasller un antivirus sans cesses ca deviend tres pénible j'ai fais un log pour avoir votre aide merci.
salutations.
Logfile of HijackThis v1.99.1
Scan saved at 15:04:01, on 03/08/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS.0\System32\smss.exe
C:\WINDOWS.0\system32\csrss.exe
C:\WINDOWS.0\system32\winlogon.exe
C:\WINDOWS.0\system32\services.exe
C:\WINDOWS.0\system32\lsass.exe
C:\WINDOWS.0\system32\svchost.exe
C:\WINDOWS.0\system32\svchost.exe
C:\WINDOWS.0\System32\svchost.exe
C:\WINDOWS.0\System32\svchost.exe
C:\WINDOWS.0\System32\svchost.exe
C:\WINDOWS.0\system32\spoolsv.exe
C:\WINDOWS.0\Explorer.EXE
C:\Program Files\WDC\SetIcon.exe
C:\Program Files\Microsoft IntelliPoint\point32.exe
C:\Program Files\Softwin\BitDefender9\bdoesrv.exe
C:\progra~1\softwin\bitdefender9\bdnagent.exe
C:\progra~1\softwin\bitdefender9\bdmcon.exe
C:\progra~1\softwin\bitdefender9\bdswitch.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\a-squared Anti-Malware\a2guard.exe
C:\PROGRA~1\Wanadoo\TaskBarIcon.exe
C:\WINDOWS.0\system32\ctfmon.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpohmr08.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
C:\PROGRA~1\Wanadoo\EspaceWanadoo.exe
C:\PROGRA~1\Wanadoo\ComComp.exe
C:\PROGRA~1\Wanadoo\PollingModule.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpoevm08.exe
C:\WINDOWS.0\system32\CascSvc.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS.0\system32\slserv.exe
C:\WINDOWS.0\System32\svchost.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Update Service\livesrv.exe
C:\Program Files\Softwin\BitDefender9\vsserv.exe
C:\WINDOWS.0\System32\alg.exe
C:\PROGRA~1\Wanadoo\Watch.exe
C:\Program Files\HDTune\HDTune.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Hijackthis Version Française\VERSION TRADUITE ORIGINALE.EXE

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.orange.fr/portail
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = http://www.adware-free-security.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: Copernic Agent - {F2E259E8-0FC8-438C-A6E0-342DD80FA53E} - C:\PROGRA~1\Copernic Agent\CopernicAgentExt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [SetIcon] \Program Files\WDC\SetIcon.exe
O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS.0\system32\PSDrvCheck.exe
O4 - HKLM\..\Run: [IntelliPoint] "C:\Program Files\Microsoft IntelliPoint\point32.exe"
O4 - HKLM\..\Run: [BDOESRV] "C:\Program Files\Softwin\BitDefender9\bdoesrv.exe"
O4 - HKLM\..\Run: [BDNewsAgent] "C:\progra~1\softwin\bitdefender9\bdnagent.exe"
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\PROGRA~1\Wanadoo\GestMaj.exe TaskBarIcon.exe
O4 - HKLM\..\Run: [BDMCon] c:\progra~1\softwin\bitdefender9\bdmcon.exe
O4 - HKLM\..\Run: [BDSwitchAgent] "C:\progra~1\softwin\bitdefender9\bdswitch.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [a-squared] "C:\Program Files\a-squared Anti-Malware\a2guard.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS.0\system32\ctfmon.exe
O4 - HKCU\..\Run: [WOOKIT] C:\PROGRA~1\Wanadoo\Shell.exe appLaunchClientZone.shl|DEFAULT=cnx|PARAM=
O4 - Global Startup: hp psc 1000 series.lnk = ?
O4 - Global Startup: hpoddt01.exe.lnk = ?
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O8 - Extra context menu item: Chercher avec Copernic Agent - res://C:\Program Files\Copernic Agent\CopernicAgentExt.rdl/INTEGRATION_MENU_SEARCHEXT
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\Microsoft Office\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Voir les cookies - C:\WINDOWS.0\web\showcookies.htm
O9 - Extra button: Messager Wanadoo - -{FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\Wanadoo Messager\Wanadoo Messager.exe
O9 - Extra 'Tools' menuitem: Messager Wanadoo - -{FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\PROGRA~1\Wanadoo Messager\Wanadoo Messager.exe
O9 - Extra button: (no name) - {193B17B0-7C9F-4D5B-AEAB-8D3605EFC084} - C:\PROGRA~1\Copernic Agent\CopernicAgent.exe
O9 - Extra 'Tools' menuitem: Démarrer Copernic Agent - {193B17B0-7C9F-4D5B-AEAB-8D3605EFC084} - C:\PROGRA~1\Copernic Agent\CopernicAgent.exe
O9 - Extra button: Copernic Agent - {688DC797-DC11-46A7-9F1B-445F4F58CE6E} - C:\PROGRA~1\Copernic Agent\CopernicAgent.exe
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS.0\System32\shdocvw.dll
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS.0\System32\shdocvw.dll
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\Microsoft Office\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - https://www.orange.fr/portail (file missing) (HKCU)
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS.0\SYSTEM32\WgaLogon.dll
O20 - Winlogon Notify: WRNotifier - WRLogonNTF.dll (file missing)
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS.0\system32\WPDShServiceObj.dll
O23 - Service: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe" /service (file missing)
O23 - Service: Casc'ADSL (CascSvc) - Unknown owner - C:\WINDOWS.0\system32\CascSvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: BitDefender Desktop Update Service (LIVESRV) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Update Service\livesrv.exe" /service (file missing)
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS.0\system32\HPZipm12.exe
O23 - Service: SmartLinkService (SLService) - - C:\WINDOWS.0\SYSTEM32\slserv.exe
O23 - Service: TuneUp WinStyler Theme Service (TUWinStylerThemeSvc) - TuneUp Software GmbH - C:\Program Files\TuneUp Utilities 2006\WinStylerThemeSvc.exe
O23 - Service: BitDefender Virus Shield (VSSERV) - Unknown owner - C:\Program Files\Softwin\BitDefender9\vsserv.exe" /service (file missing)
O23 - Service: BitDefender Communicator (XCOMM) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe" /service (file missing)