Help!

Bonjour, petit soucis de virus donc ai fait un test chez rav dont voici le résultat :
Scan started at 22/06/2004 10:47:34

Scanning memory...
Scanning boot sectors...
Scanning files...
C:\WINDOWS\SYSTEM32\PDSched.exe - Backdoor:IRC/SdBot -> Infected
C:\WINDOWS\Downloaded Program Files\ISTactivex.dll - TrojanDownloader:Win32/IstBar.EN -> Suspicious
C:\Program Files\AVPersonal\INFECTED\bkozp.VIR - Win32/Korgo.N.worm -> Infected

Scanned
============================
Objects: 36280
Directories: 2387
Archives: 1507
Size(Kb): -22639
Infected files: 2

Found
============================
Viruses found: 2
Suspicious files: 1
Disinfected files: 0
Mail files: 163
Maintenant je fais quoi?