Virus et spywares impossible à supprimer

Bonjour,

J'ai un gros problème et je viens vous demander de l'aide, j'ai épuisé toutes les solutions que je pensais avoir. Avast! m'a trouvé un cheval de troie dans le dossier ms-dos.pif, et Spybot Search and Destroy m'a trouvé LSA. Les deux log n'arrivent pas à supprimer les fichiers, du coup je ne sais plus quoi faire! :-\

Je serai infiniment reconnaissante à toute personne qui tentera de m'aider :-)

Voilà mon analyse HijackThis:

Logfile of HijackThis v1.99.1
Scan saved at 22:19:01, on 09/09/2005
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\Program Files\AVPersonal\AVWUPSRV.EXE
C:\WINDOWS\system32\HPConfig.exe
C:\Program Files\HPQ\Notebook Utilities\HPWirelessMgr.exe
C:\Program Files\Kerio\Personal Firewall 4\kpf4ss.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Kerio\Personal Firewall 4\kpf4gui.exe
C:\Program Files\Stardock\Object Desktop\WindowBlinds\wbload.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Kerio\Personal Firewall 4\kpf4gui.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\WINDOWS\System32\hphmon05.exe
C:\Program Files\Roxio\Easy CD Creator 6\DragToDisc\DrgToDsc.exe
C:\WINDOWS\Logi_MwX.Exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Microsoft AntiSpyware\gcasServ.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd2.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Winamp\winampa.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\CursorXP\CursorXP.exe
C:\Program Files\Microsoft AntiSpyware\gcasDtServ.exe
C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
C:\Program Files\Sony Corporation\Picture Package\Picture Package Menu\SonyTray.exe
C:\Program Files\Sony Corporation\Picture Package\Picture Package Applications\Residence.exe
C:\Program Files\Stardock\ObjectDock\ObjectDock.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\System32\msdos.pif
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Netscape\Netscape\Netscp.exe
C:\PROGRA~1\Lavasoft\AD-AWA~1\Ad-Aware.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\Mali\Mes documents\Setups\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = res://C:\Program Files\Copernic Agent\CopernicAgentExt.rdl/INTEGRATION_BAND_SEARCHBAR_HTML
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://freebox.free.fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://freebox.free.fr/
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.intervocative.com/Login.aspx?task=sendal&email=emilieiob@hotmail.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: TGTSoft Explorer Toolbar Changer - {C333CF63-767F-4831-94AC-E683D962C63C} - (no file)
O3 - Toolbar: Copernic Agent - {F2E259E8-0FC8-438C-A6E0-342DD80FA53E} - C:\Program Files\Copernic Agent\CopernicAgentExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\system32\msdxm.ocx
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [Display Settings] C:\Program Files\HPQ\Notebook Utilities\hptasks.exe /s
O4 - HKLM\..\Run: [QT4HPOT] C:\Program Files\HPQ\One-Touch\OneTouch.EXE
O4 - HKLM\..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [HPHUPD05] c:\Program Files\Hewlett-Packard\{45B6180B-DCAB-4093-8EE8-6164457517F0}\hphupd05.exe
O4 - HKLM\..\Run: [HPHmon05] C:\WINDOWS\System32\hphmon05.exe
O4 - HKLM\..\Run: [RoxioEngineUtility] "C:\Program Files\Fichiers communs\Roxio Shared\System\EngUtil.exe"
O4 - HKLM\..\Run: [RoxioDragToDisc] "C:\Program Files\Roxio\Easy CD Creator 6\DragToDisc\DrgToDsc.exe"
O4 - HKLM\..\Run: [Cpqset] C:\Program Files\HPQ\Default Settings\cpqset.exe
O4 - HKLM\..\Run: [Logitech Utility] Logi_MwX.Exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [gcasServ] "C:\Program Files\Microsoft AntiSpyware\gcasServ.exe"
O4 - HKLM\..\Run: [iTunesHelper] C:\Program Files\iTunes\iTunesHelper.exe
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [LogonStudio] "C:\Program Files\WinCustomize\LogonStudio\logonstudio.exe" /RANDOM
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [BootSkin Startup Jobs] "C:\PROGRA~1\Stardock\WINCUS~1\BootSkin\BootSkin.exe" /StartupJobs
O4 - HKLM\..\Run: [WinampAgent] C:\Program Files\Winamp\winampa.exe
O4 - HKLM\..\Run: [SYSTRAY] C:\UNMT.EXE
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [CursorXP] C:\Program Files\CursorXP\CursorXP.exe
O4 - HKCU\..\Run: [MSDOS Security Service] msdos.pif
O4 - HKCU\..\RunServices: [MSDOS Security Service] msdos.pif
O4 - Startup: Stardock ObjectDock.lnk = C:\Program Files\Stardock\ObjectDock\ObjectDock.exe
O4 - Global Startup: DSLMON.lnk = C:\Program Files\SAGEM\SAGEM F@st 800-840\dslmon.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Picture Package Menu.lnk = C:\Program Files\Sony Corporation\Picture Package\Picture Package Menu\SonyTray.exe
O4 - Global Startup: Picture Package VCD Maker.lnk = C:\Program Files\Sony Corporation\Picture Package\Picture Package Applications\Residence.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra button: (no name) - {193B17B0-7C9F-4D5B-AEAB-8D3605EFC084} - C:\PROGRA~1\COPERN~1\COPERN~1.EXE
O9 - Extra 'Tools' menuitem: Démarrer Copernic Agent - {193B17B0-7C9F-4D5B-AEAB-8D3605EFC084} - C:\PROGRA~1\COPERN~1\COPERN~1.EXE
O9 - Extra button: Copernic Agent - {688DC797-DC11-46A7-9F1B-445F4F58CE6E} - C:\PROGRA~1\COPERN~1\COPERN~1.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
O10 - Broken Internet access because of LSP provider 'c:\program files\newdotnet\newdotnet6_38.dll' missing
O14 - IERESET.INF: START_PAGE_URL=http://freebox.free.fr/
O15 - ProtocolDefaults: 'http' protocol is in My Computer Zone, should be Internet Zone
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} - http://software-dl.real.com/0789a9a0b32d54f07c05/netzip/RdxIE601_fr.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2004061001/housecall.trendmicro.com/housecall/xscan53.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O16 - DPF: {D54160C3-DB7B-4534-9B65-190EE4A9C7F7} (SproutLauncherCtrl Class) - http://www.shockwave.com/content/feedingfrenzy/SproutLauncher.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{ECC76021-9AA9-4468-938F-F6A3B9CD23CD}: NameServer = 212.27.54.252 213.228.0.212
O20 - Winlogon Notify: WB - C:\PROGRA~1\Stardock\OBJECT~2\WINDOW~1\fastload.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: AntiVir Update (AVWUpSrv) - H+BEDV Datentechnik GmbH, Germany - C:\Program Files\AVPersonal\AVWUPSRV.EXE
O23 - Service: HP Configuration Interface Service (HPConfig) - Hewlett-Packard - C:\WINDOWS\system32\HPConfig.exe
O23 - Service: HPWirelessMgr - Hewlett-Packard Co. - C:\Program Files\HPQ\Notebook Utilities\HPWirelessMgr.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPod Service (iPodService) - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Kerio Personal Firewall 4 (KPF4) - Kerio Technologies - C:\Program Files\Kerio\Personal Firewall 4\kpf4ss.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\System32\HPZipm12.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\Security Center\SymWSC.exe