Problème avec win 32 skimorph (cryp)

Bonjour,
Avast m'a permis de trouver 2 win 32: skimporph (cryp) et trojan-gen (other). Comment m'en débarasser? voici le rapport obtenu.

-----------\\ ToolBar S&D 1.2.2 XP/Vista

Microsoft Windows XP Professionnel ( v5.1.2600 ) Service Pack 2
X86-based PC ( Uniprocessor Free : Intel(R) Celeron(R) CPU 2.40GHz )
BIOS : BIOS Date: 01/04/05 11:08:01 Ver: 08.00.09
USER : Ronan ( Administrator )
BOOT : Normal boot
Antivirus : avast! antivirus 4.8.1229 [VPS 081011-0] 4.8.1229 (Activated)
Firewall : Norton Internet Worm Protection 2006 (Not Activated)
A:\ (USB)
C:\ (Local Disk) - NTFS - Total : 58 Go Free : 18 Go
D:\ (Local Disk) - NTFS - Total : 94 Go Free : 51 Go
E:\ (CD or DVD)
G:\ (Local Disk) - FAT32 - Total : 335 Go Free : 199 Go

"C:\ToolBar SD" ( MAJ : 04-10-2008|21:00 )
Option : [1] ( 12/10/2008|14:18 )

-----------\\ Recherche de Fichiers / Dossiers ...

-----------\\ Extensions

(Ronan) - {3112ca9c-de6d-4884-a869-9855de68056c} => google-toolbar

-----------\\ [..\Internet Explorer\Main]

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main]
"Local Page"="C:\\WINDOWS\\system32\\blank.htm"
"Start Page"="http://search.conduit.com/?SearchSource=10&ctid=CT1576177"
"Search Page"="https://www.google.com/?gws_rd=ssl"
"Search Bar"="http://www.google.com/toolbar/ie8/sidebar.html"

[HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Main]
"Default_Page_URL"="http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome"
"Default_Search_URL"="http://www.google.com/toolbar/ie8/sidebar.html"
"Search Page"="http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch"
"Start Page"="http://www.microsoft.com/isapi/redir.dll?prd={SUB_PRD}&clcid={SUB_CLSID}&pver={SUB_PVER}&ar=home"

--------------------\\ Recherche d'autres infections

C:\Program Files\WebMediaPlayer
C:\Program Files\WebMediaPlayer\resources
C:\Program Files\WebMediaPlayer\skins
C:\Program Files\WebMediaPlayer\sqlite3.dll
C:\Program Files\WebMediaPlayer\uninst.exe
C:\Program Files\WebMediaPlayer\updates
C:\Program Files\WebMediaPlayer\WebMediaPlayer.exe
C:\DOCUME~1\ALLUSE~1\MENUDM~1\PROGRA~1\WebMediaPlayer
C:\DOCUME~1\ALLUSE~1\MENUDM~1\PROGRA~1\WebMediaPlayer\Conditions g‚n‚rales.url
C:\DOCUME~1\ALLUSE~1\MENUDM~1\PROGRA~1\WebMediaPlayer\Confidentialit‚.url
C:\DOCUME~1\ALLUSE~1\MENUDM~1\PROGRA~1\WebMediaPlayer\D‚sinstaller.lnk
C:\DOCUME~1\ALLUSE~1\MENUDM~1\PROGRA~1\WebMediaPlayer\WebMediaPlayer.lnk
C:\DOCUME~1\ALLUSE~1\MENUDM~1\PROGRA~1\WebMediaPlayer\Website.url

C:\DOCUME~1\Ronan\LOCALS~1\APPLIC~1\gamyk.dat
C:\DOCUME~1\Ronan\LOCALS~1\APPLIC~1\gamyk.exe
C:\DOCUME~1\Ronan\LOCALS~1\APPLIC~1\gamyk_nav.dat
C:\DOCUME~1\Ronan\LOCALS~1\APPLIC~1\gamyk_navps.dat
[b]==> EGDACCESS <==/b

--------------------\\ ROGUES ..

C:\PROGRA~1\FICHIE~1\ErrorSafe

1 - "C:\ToolBar SD\TB_1.txt" - 12/10/2008|14:20 - Option : [1]

-----------\\ Fin du rapport a 14:20:13,14