Un infection et une question

Bonjour,
je voudrais savoir comment apprendre quand une menace integre mon système j'ai fait un petit rapport de virus par la meme occasion =)

voila merci de me repondre

Deckard's System Scanner v20071014.68
Run by Toni on 2008-08-12 18:01:01
Computer is in Normal Mode.
--------------------------------------------------------------------------------

-- System Restore --------------------------------------------------------------

Successfully created a Deckard's System Scanner Restore Point.

-- Last 5 Restore Point(s) --
30: 2008-08-12 16:01:07 UTC - RP30 - Deckard's System Scanner Restore Point
29: 2008-08-12 09:51:47 UTC - RP29 - Installé 1300Trb
28: 2008-08-12 09:51:42 UTC - RP28 - Installé 1300_Help
27: 2008-08-12 09:51:31 UTC - RP27 - Installé 1300Tour
26: 2008-08-12 09:51:22 UTC - RP26 - Installé 1300

-- First Restore Point --
1: 2008-08-07 14:47:47 UTC - RP1 - Point de vérification système

Backed up registry hives.
Performed disk cleanup.

-- HijackThis Clone ------------------------------------------------------------

Emulating logfile of Trend Micro HijackThis v2.0.2
Scan saved at 2008-08-12 18:02:39
Platform: Windows XP Service Pack 2 (5.01.2600)
MSIE: Internet Explorer (6.00.2900.2180)
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\ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\a-squared Anti-Malware\a2service.exe
C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 7.0\avp.exe
C:\Program Files\Spyware Terminator\sp_rsser.exe
C:\WINDOWS\system32\PAStiSvc.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Windows Live\Messenger\usnsvc.exe
C:\WINDOWS\system32\ati2evxx.exe
C:\WINDOWS\explorer.exe
C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 7.0\avp.exe
C:\Program Files\Spyware Terminator\SpywareTerminatorShield.Exe
C:\Program Files\HP\HP Software Update\hpwuSchd.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\MessengerDiscovery\MessengerDiscovery Live.exe
C:\Program Files\Windows Media Player\wmplayer.exe
C:\WINDOWS\system32\hpzipm12.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\BitComet\BitComet.exe
C:\Documents and Settings\Toni\Bureau\dss.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://home.microsoft.com/access/autosearch.asp?p=%s
O2 - BHO: BitComet ClickCapture - {39F7E362-828A-4B5A-BCAF-5B79BFDFEA60} - C:\Program Files\BitComet\tools\BitCometBHO_1.2.2.28.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O4 - HKLM\..\Run: [AVP] "C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 7.0\avp.exe"
O4 - HKLM\..\Run: [SpywareTerminator] "C:\Program Files\Spyware Terminator\SpywareTerminatorShield.exe"
O4 - HKLM\..\Run: [HP Software Update] "C:\Program Files\HP\HP Software Update\HPWuSchd.exe"
O4 - HKLM\..\Run: [DXDllRegExe] dxdllreg.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O8 - Extra context menu item: &D&ownload &with BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddLink.htm
O8 - Extra context menu item: &D&ownload all video with BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddVideo.htm
O8 - Extra context menu item: &D&ownload all with BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddAllLink.htm
O8 - Extra context menu item: Ajouter à Kaspersky Anti-Bannière - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 7.0\ie_banner_deny.htm
O9 - Extra button: BitComet - {D18A0B52-D63C-4ed0-AFC6-C1E3DC1AF43A} - res://C:\Program Files\BitComet\tools\BitCometBHO_1.2.2.28.dll/206 (file missing)
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/flashplayer/current/swflash.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\Program Files\Windows Live\Messenger\msgrapp.8.5.1302.1018.dll
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\Program Files\Windows Live\Messenger\msgrapp.8.5.1302.1018.dll
O23 - Service: a-squared Anti-Malware Service (a2AntiMalware) - Emsi Software GmbH - C:\Program Files\a-squared Anti-Malware\a2service.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Kaspersky Internet Security 7.0 (AVP) - Kaspersky Lab - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 7.0\avp.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\hpzipm12.exe
O23 - Service: Spyware Terminator Realtime Shield Service (sp_rssrv) - Crawler.com - C:\Program Files\Spyware Terminator\sp_rsser.exe
O23 - Service: STI Simulator - Unknown owner - C:\WINDOWS\system32\PAStiSvc.exe