Bonjour!
Voici les rapports :
VundoFix:
[07/11/2008, 13:06:06] - VirtumundoBeGone v1.5 ( "D:\Documents and Settings\Administrateur\Bureau\VirtumundoBeGone.exe" )
[07/11/2008, 13:06:15] - Detected System Information:
[07/11/2008, 13:06:15] - Windows Version: 5.1.2600, Service Pack 2
[07/11/2008, 13:06:15] - Current Username: Administrateur (Admin)
[07/11/2008, 13:06:15] - Windows is in NORMAL mode.
[07/11/2008, 13:06:15] - Searching for Browser Helper Objects:
[07/11/2008, 13:06:15] - BHO 1: {02478D38-C3F9-4EFB-9B51-7695ECA05670} (Yahoo! Toolbar Helper)
[07/11/2008, 13:06:15] - BHO 2: {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} (Aide pour le lien d'Adobe PDF Reader)
[07/11/2008, 13:06:15] - BHO 3: {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} (AVG Safe Search)
[07/11/2008, 13:06:15] - BHO 4: {53707962-6F74-2D53-2644-206D7942484F} ()
[07/11/2008, 13:06:15] - WARNING: BHO has no default name. Checking for Winlogon reference.
[07/11/2008, 13:06:15] - Checking for HKLM\...\Winlogon\Notify\SDHelper
[07/11/2008, 13:06:15] - Key not found: HKLM\...\Winlogon\Notify\SDHelper, continuing.
[07/11/2008, 13:06:15] - BHO 5: {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} (SSVHelper Class)
[07/11/2008, 13:06:15] - BHO 6: {79fd155e-1d29-7b5a-3d93-5d8fee14df47} (adsonmedia browser optimizer)
[07/11/2008, 13:06:15] - BHO 7: {9030D464-4C02-4ABF-8ECC-5164760863C6} (Windows Live Sign-in Helper)
[07/11/2008, 13:06:15] - BHO 8: {A057A204-BACC-4D26-9990-79A187E2698E} (AVG Security Toolbar)
[07/11/2008, 13:06:15] - BHO 9: {AA58ED58-01DD-4d91-8333-CF10577473F7} (Google Toolbar Helper)
[07/11/2008, 13:06:15] - BHO 10: {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} (Google Toolbar Notifier BHO)
[07/11/2008, 13:06:15] - BHO 11: {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} (Windows Live Toolbar Helper)
[07/11/2008, 13:06:15] - BHO 12: {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} (EpsonToolBandKicker Class)
[07/11/2008, 13:06:15] - Finished Searching Browser Helper Objects
[07/11/2008, 13:06:15] - Finishing up...
[07/11/2008, 13:06:15] - Nothing found! Exiting...
VitumondeBegone:
D:\WINDOWS\system32\hkxkccfvza.dll unregistered successfully.
D:\WINDOWS\system32\hkxkccfvza.dll moved successfully.
File/Folder D:\WINDOWS\system32\hkxkccfvza.dll not found.
HijackThis:
OTMoveIt2 by OldTimer - Version 1.0.4.3 log created on 07112008_131513
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 13:31:57, on 11/07/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal
Running processes:
D:\WINDOWS\System32\smss.exe
D:\WINDOWS\system32\winlogon.exe
D:\WINDOWS\system32\services.exe
D:\WINDOWS\system32\lsass.exe
D:\WINDOWS\system32\svchost.exe
D:\WINDOWS\System32\svchost.exe
D:\WINDOWS\system32\spoolsv.exe
D:\WINDOWS\Explorer.EXE
D:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
D:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
D:\WINDOWS\system32\svchost.exe
D:\Program Files\Mouse Driver\MouseDrv.exe
D:\Program Files\Mediafour\MacDrive\MDDiskProtect.exe
D:\Program Files\Fichiers communs\Mediafour\MACVNTFY.EXE
D:\Program Files\Fichiers communs\Logitech\QCDriver2\LVCOMS.EXE
D:\Program Files\ScanSoft\OmniPageSE\opware32.exe
D:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
D:\Program Files\Java\jre1.6.0_03\bin\jusched.exe
D:\Program Files\Multimedia Mouse Driver\MouseDrv.exe
D:\PROGRA~1\AVG\AVG8\avgrsx.exe
D:\PROGRA~1\AVG\AVG8\avgtray.exe
D:\Program Files\MSN Messenger\MsnMsgr.Exe
D:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
D:\Program Files\MSN Messenger\usnsvc.exe
D:\WINDOWS\system32\wuauclt.exe
D:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WLLoginProxy.exe
D:\Program Files\Java\jre1.6.0_03\bin\jucheck.exe
D:\Program Files\Internet Explorer\iexplore.exe
D:\Program Files\Internet Explorer\iexplore.exe
D:\Program Files\Trend Micro\HijackThis\HijackThis.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http://google.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - D:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - D:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - D:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - D:\Program Files\AVG\AVG8\avgssie.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - D:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - D:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - D:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - D:\PROGRA~1\AVG\AVG8\AVGTOO~1.DLL
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - d:\program files\google\googletoolbar1.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - D:\Program Files\Google\GoogleToolbarNotifier\2.0.301.7164\swg.dll
O2 - BHO: Windows Live Toolbar Helper - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - D:\Program Files\Windows Live Toolbar\msntb.dll
O2 - BHO: EpsonToolBandKicker Class - {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} - D:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - d:\program files\google\googletoolbar1.dll
O3 - Toolbar: Windows Live Toolbar - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - D:\Program Files\Windows Live Toolbar\msntb.dll
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - D:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - D:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - D:\PROGRA~1\AVG\AVG8\AVGTOO~1.DLL
O4 - HKLM\..\Run: [NVMixerTray] "D:\Program Files\NVIDIA Corporation\NvMixer\NVMixerTray.exe"
O4 - HKLM\..\Run: [CreativeMouse ] D:\Program Files\Mouse Driver\MouseDrv.exe
O4 - HKLM\..\Run: [MDDiskProtect.exe] D:\Program Files\Mediafour\MacDrive\MDDiskProtect.exe
O4 - HKLM\..\Run: [MediafourGettingStartedWithMacDrive6] "D:\Program Files\Mediafour\MacDrive\MacDrive.exe" /runonce
O4 - HKLM\..\Run: [Mediafour Mac Volume Notifications] "D:\Program Files\Fichiers communs\Mediafour\MACVNTFY.EXE" /auto
O4 - HKLM\..\Run: [LVCOMS] D:\Program Files\Fichiers communs\Logitech\QCDriver2\LVCOMS.EXE
O4 - HKLM\..\Run: [Omnipage] D:\Program Files\ScanSoft\OmniPageSE\opware32.exe
O4 - HKLM\..\Run: [DeviceDiscovery] D:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
O4 - HKLM\..\Run: [NeroCheck] D:\WINDOWS\system32\\NeroCheck.exe
O4 - HKLM\..\Run: [WireLessMouse] D:\Program Files\Multimedia Mouse Driver\StartAutorun.exe MouseDrv.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "D:\Program Files\Java\jre1.6.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "D:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [AVG8_TRAY] D:\PROGRA~1\AVG\AVG8\avgtray.exe
O4 - HKCU\..\Run: [MsnMsgr] "D:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [swg] D:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [EPSON Stylus D92 Series] D:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIBZE.EXE /FU "D:\WINDOWS\TEMP\E_S89.tmp" /EF "HKCU"
O4 - HKCU\..\Run: [AdobeUpdater] D:\Program Files\Fichiers communs\Adobe\Updater5\AdobeUpdater.exe
O4 - HKUS\S-1-5-18\..\Run: [msnmsgr] "D:\Program Files\MSN Messenger\msnmsgr.exe" /background (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [msnmsgr] "D:\Program Files\MSN Messenger\msnmsgr.exe" /background (User 'Default user')
O4 - Global Startup: Adobe Gamma Loader.lnk = D:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O8 - Extra context menu item: &Windows Live Search -
res://D:\Program Files\Windows Live Toolbar\msntb.dll/search.htm
O8 - Extra context menu item: Add to Windows &Live Favorites -
http://favorites.live.com/quickadd.aspx
O8 - Extra context menu item: E&xporter vers Microsoft Excel -
res://D:\PROGRA~1\MICROS~1\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Ouvrir dans un nouvel onglet d'arrière-plan -
res://D:\Program Files\Windows Live Toolbar\Components\fr-fr\msntabres.dll.mui/229?19b99b4dc9c64ed38cb24f0330a05e74
O8 - Extra context menu item: Ouvrir dans un nouvel onglet de premier plan -
res://D:\Program Files\Windows Live Toolbar\Components\fr-fr\msntabres.dll.mui/230?19b99b4dc9c64ed38cb24f0330a05e74
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - D:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - D:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - D:\WINDOWS\bdoscandel.exe
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - D:\WINDOWS\bdoscandel.exe
O16 - DPF: {2D8ED06D-3C30-438B-96AE-4D110FDC1FB8} (ActiveScan 2.0 Installer Class) -
http://acs.pandasoftware.com/activescan/cabs/as2stubie.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - D:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) -
http://www.bitdefender.fr/scan_fr/scan8/oscan8.cab
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - D:\Program Files\AVG\AVG8\avgpp.dll
O20 - AppInit_DLLs: avgrsstx.dll
O20 - Winlogon Notify: MacDrive-iTunes compatibility - D:\Program Files\Fichiers communs\Mediafour\MacDriveiTunesPatch.dll
O23 - Service: Ad-Aware 2007 Service (aawservice) - Lavasoft AB - D:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
O23 - Service: Adobe LM Service - Unknown owner - D:\Program Files\Fichiers communs\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: AVG8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - D:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
O23 - Service: Google Updater Service (gusvc) - Google - D:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
--
End of file - 8433 bytes
Depuis la fin de la procédure, que tu as très bien décrite (donc facile à suivre pour qqn qui ne s'y connait pas comme moi!), tout semble être rentré dans l'ordre...

Merci ! Merci ! Merci !