VIRUS ALERT! Rapport HiJackThis

Bonjour à tous,

J'ai le message "VIRUS ALERT! " à coté de l'heure; le disque C: n'apparait plus dans poste de travail; dans le menu démarrer le bouton "Fermer la session" n'apparait pas...
J'ai réussi à faire ré-apparaitre le bouton "Programme" je ne sait par quel miracle ..
Je ne sait pas interpréter ni réparer mon PC a partir du rapport Hijackthis , quelqu'un pourrait-il me venir en aide SVP ?
Merci d'avance...

Rapport :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11:06: VIRUS ALERT!, on 01/09/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.5730.0011)
Boot mode: Normal

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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\ctfmon.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Documents and Settings\Standard\Bureau\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer,SearchURL = https://internetsearchservice.com/
R1 - HKLM\Software\Microsoft\Internet Explorer,SearchURL = https://internetsearchservice.com/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://internetsearchservice.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.01net.com/telecharger/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.01net.com/telecharger/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.01net.com/telecharger/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
F2 - REG:system.ini: UserInit=C:\WINDOWS\system32\userinit.exe,userinit.exe
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {129964FD-FBF2-4FDE-BA3C-19B79D880244} - (no file)
O2 - BHO: D - {42C64375-EC8F-325D-A70C-A9747DAD7DF9} - C:\WINDOWS\system32\mmx90674.dll
O2 - BHO: (no name) - {49cf5c37-b6d1-4de1-8a03-4a90d9475865} - (no file)
O2 - BHO: (no name) - {62F9E990-A400-4438-951E-7CFA19B0FC7F} - (no file)
O2 - BHO: (no name) - {70646A87-9D5D-49F4-A182-03FF30EB28EA} - (no file)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O2 - BHO: (no name) - {77E1C717-E78A-4BDB-AB9E-E79BB3A2FBF0} - (no file)
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: (no name) - {82FE7773-FD0D-4303-88BE-CC13735BF5E8} - (no file)
O2 - BHO: (no name) - {98dbbf16-ca43-4c33-be80-99e6694468a4} - (no file)
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O2 - BHO: {77f79fd9-6692-5e19-f534-de63a39bdaba} - {abadb93a-36ed-435f-91e5-29669df97f77} - (no file)
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\2.0.301.7164\swg.dll
O2 - BHO: (no name) - {B344D15C-A728-44F2-8FA4-36DBEB7A0873} - (no file)
O2 - BHO: (no name) - {bc97b254-b2b9-4d40-971d-78e0978f5f26} - (no file)
O2 - BHO: (no name) - {CC4EA8A4-7579-49C4-B1E1-CF8F257DDBC1} - (no file)
O2 - BHO: EpsonToolBandKicker Class - {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} - C:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - C:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: (no name) - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - (no file)
O3 - Toolbar: (no name) - {430C60E7-36D5-4BC3-8783-02B7FB0E966E} - (no file)
O4 - HKLM\..\Run: [winlog] winlog.exe
O4 - HKLM\..\Run: [SchedulingAgent] mstinit.exe /firstlogon
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\RunServices: [winlog] winlog.exe
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [RegistryMechanic] C:\Program Files\Registry Mechanic\RegMech.exe /H
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O8 - Extra context menu item: Add to AMV Converter... - C:\Program Files\MP3 Player Utilities 4.05\AMVConverter\grab.html
O8 - Extra context menu item: MediaManager tool grab multimedia file - C:\Program Files\MP3 Player Utilities 4.05\MediaManager\grab.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx1.hotmail.com/mail/w2/resources/MSNPUpld.cab
O16 - DPF: {A8F2B9BD-A6A0-486A-9744-18920D898429} - http://www.sibelius.com/download/software/win/ActiveXPlugin.cab
O16 - DPF: {CF40ACC5-E1BB-4AFF-AC72-04C2F616BCA7} (get_atlcom Class) - http://www.adobe.com/products/acrobat/nos/gp.cab
O20 - Winlogon Notify: cbXRKDUo - cbXRKDUo.dll (file missing)
O21 - SSODL: rqbmvpso - {95C95C25-BBB6-47E0-B0DF-F25C6ED37821} - (no file)
O23 - Service: Apple Mobile Device - Apple, Inc. - C:\Program Files\Fichiers communs\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe