Pb de trojan type TROJ_BAGLE.DM ???!!!!!!

Depuis quelques jours mon Win2000 va de mal en pis :
Ca a commencé par le process WINLOGON (thread mloader32.dll) qui mange 100% de CPU et depuis je perds régulièrement de nouvelles fonctions Windows: internet, copier/coller, shutdown...plus rien ne marche. Et la pluspart des applications ne démarrent plus ou bien crash après quelques secondes de fonctionnements
Bref c'est la panique !!!!

Voici ma log HiJackThis, si une bonne âme pouvait me donner le moindre tuyau :

Logfile of HijackThis v1.99.1
Scan saved at 23:02:04, on 07/03/2006
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\winnt\System32\smss.exe
C:\winnt\system32\winlogon.exe
C:\winnt\system32\services.exe
C:\winnt\system32\lsass.exe
C:\winnt\Explorer.EXE
K:\hijackthis\HijackThis.exe
C:\winnt\system32\taskmgr.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.club-internet.fr/
R3 - URLSearchHook: (no name) - {00A6FAF6-072E-44cf-8957-5838F569A31D} - C:\Program Files\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL
O2 - BHO: MyWebSearch Search Assistant BHO - {00A6FAF1-072E-44cf-8957-5838F569A31D} - C:\Program Files\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL
O2 - BHO: myBar BHO - {0494D0D1-F8E0-41ad-92A3-14154ECE70AC} - C:\Program Files\MyWay\myBar\1.bin\MYBAR.DLL
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - D:\Program Files\Adobe\Acrobat 6.0\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: mwsBar BHO - {07B18EA1-A523-4961-B6BB-170DE4475CCA} - C:\Program Files\MyWebSearch\bar\1.bin\MWSBAR.DLL
O2 - BHO: (no name) - {724d43a9-0d85-11d4-9908-00400523e39a} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O2 - BHO: AcroIEToolbarHelper Class - {AE7CD045-E861-484f-8273-0445EE161910} - D:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &RoboForm - {724d43a0-0d85-11d4-9908-00400523e39a} - C:\Program Files\Siber Systems\AI RoboForm\RoboForm.dll
O3 - Toolbar: &SearchBar - {0494D0D9-F8E0-41ad-92A3-14154ECE70AC} - C:\Program Files\MyWay\myBar\1.bin\MYBAR.DLL
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - D:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O8 - Extra context menu item: &Search - http://bar.mywebsearch.com/menusearch.html?p=ZNxmk144YY...
O8 - Extra context menu item: &Traduire à partir de l'anglais - res://c:\program files\google\GoogleToolbar2.dll/cmwordtrans.html
O8 - Extra context menu item: Enregistrer &[ - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComSavePass.html
O8 - Extra context menu item: Pages liées - res://c:\program files\google\GoogleToolbar2.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://c:\program files\google\GoogleToolbar2.dll/cmsimilar.html
O8 - Extra context menu item: Personnaliser &Menu - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComCustomizeIEMenu.html
O8 - Extra context menu item: Recherche &Google - res://c:\program files\google\GoogleToolbar2.dll/cmsearch.html
O8 - Extra context menu item: Remplir &$ - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComFillForms.html
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://c:\program files\google\GoogleToolbar2.dll/cmcache.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - D:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - D:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O9 - Extra button: Remplir - {320AF880-6646-11D3-ABEE-C5DBF3571F46} - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComFillForms.html
O9 - Extra 'Tools' menuitem: Remplir &$ - {320AF880-6646-11D3-ABEE-C5DBF3571F46} - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComFillForms.html
O9 - Extra button: Enregistrer - {320AF880-6646-11D3-ABEE-C5DBF3571F49} - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComSavePass.html
O9 - Extra 'Tools' menuitem: Enregistrer &[ - {320AF880-6646-11D3-ABEE-C5DBF3571F49} - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComSavePass.html
O9 - Extra button: Barre RF - {724d43aa-0d85-11d4-9908-00400523e39a} - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComShowToolbar.html
O9 - Extra 'Tools' menuitem: Barre RF &2 - {724d43aa-0d85-11d4-9908-00400523e39a} - file://C:\Program Files\Siber Systems\AI RoboForm\RoboFormComShowToolbar.html
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\winnt\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\winnt\web\related.htm
O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} - http://ak.imgfarm.com/images/nocache/funwebproducts/ei/...
O16 - DPF: {41F17733-B041-4099-A042-B518BB6A408C} - http://a1540.g.akamai.net/7/1540/52/20021205/qtinstall....
O16 - DPF: {78D80081-F388-11D3-9161-00105A07EA40} (LEAD MCMP/MJPEG Decoder) - http://www.leadtools.com/cabs/LCODCCMPE.CAB
O16 - DPF: {A6B6454F-9C29-4F7F-86A8-3D50E96BCDD6} - http://us.dl1.yimg.com/download.yahoo.com/dl/installs/y...
O18 - Protocol: msell - {E90F00EC-3694-11D2-99FE-00104B2D62CC} - C:\PROGRA~1\COMMON~1\MICROS~1\REFERE~1\MSELL.dll
O20 - Winlogon Notify: mloader32 - C:\winnt\SYSTEM32\mloader32.dll

Merci pour toute suggestion, piste ou idée qui pourrait m'aider à récupérer mon système !!!