Pc infecté

bonjour voilà un scan afin de savoir si tout est normal.Merci de m'aider.on vient de passer trois heures à tout nettoyer .Merci à vous.

Logfile of HijackThis v1.99.1
Scan saved at 01:20:18, on 11/09/2008
Platform: Windows 2000 (WinNT 5.00.2195)
MSIE: Internet Explorer v5.00 (5.00.2920.0000)

Running processes:
G:\WINNT\System32\smss.exe
G:\WINNT\system32\winlogon.exe
G:\WINNT\system32\services.exe
G:\WINNT\system32\lsass.exe
G:\WINNT\System32\Ati2evxx.exe
G:\WINNT\system32\svchost.exe
G:\WINNT\system32\spoolsv.exe
G:\WINNT\System32\svchost.exe
G:\WINNT\system32\regsvc.exe
G:\WINNT\system32\MSTask.exe
G:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
G:\WINNT\System32\WBEM\WinMgmt.exe
G:\WINNT\system32\Ati2evxx.exe
G:\WINNT\Explorer.exe
G:\Program Files\Analog Devices\SoundMAX\Smtray.exe
C:\Program Files\ASUS\Probe\AsusProb.exe
G:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
G:\WINNT\System32\internat.exe
G:\Program Files\Internet Explorer\iexplore.exe
G:\Program Files\Internet Explorer\iexplore.exe
G:\Documents and Settings\ac\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://google.fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.fr.msn.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O3 - Toolbar: @msdxmLC.dll,-1@1036,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - G:\WINNT\System32\msdxm.ocx
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [Smapp] G:\Program Files\Analog Devices\SoundMAX\Smtray.exe
O4 - HKLM\..\Run: [ASUS Probe] C:\Program Files\ASUS\Probe\AsusProb.exe
O4 - HKLM\..\Run: [ATIPTA] G:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKCU\..\Run: [internat.exe] internat.exe
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - G:\WINNT\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - G:\WINNT\web\related.htm
O14 - IERESET.INF: START_PAGE_URL=http://www.fr.msn.com
O14 - IERESET.INF: MS_START_PAGE_URL=http://www.fr.msn.com
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - G:\WINNT\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - G:\WINNT\system32\ati2sgag.exe
O23 - Service: Service d'administration du Gestionnaire de disque logique (dmadmin) - VERITAS Software Corp. - G:\WINNT\System32\dmadmin.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - G:\Program Files\Analog Devices\SoundMAX\SMAgent.exe