CID et cheval de troye: que faire?

Bonjour,
Je suis ,enfin mon ordi est est envahi!! windows xp familial

CID, j'ai fait lesdifférentes manips et voici le rapport de bitdefender:

BitDefender Online Scanner

Scan report generated at: Tue, Jan 22, 2008 - 18:48:01

Scan path: C:\;D:\;E:\;F:\;G:\;H:\;I:\;

Statistics

Time
01:18:54

Files
338246

Folders
8360

Boot Sectors
3

Archives
9530

Packed Files
18444

Results

Identified Viruses
2

Infected Files
2

Suspect Files
0

Warnings
0

Disinfected
0

Deleted Files
2

Engines Info

Virus Definitions
892859

Engine build
AVCORE v1.0 (build 2422) (i386) (Sep 25 2007 08:26:36)

Scan plugins
14

Archive plugins
38

Unpack plugins
7

E-mail plugins
6

System plugins
1

Scan Settings

First Action
Disinfect

Second Action
Delete

Heuristics
Yes

Enable Warnings
Yes

Scanned Extensions
*;

Exclude Extensions

Scan Emails
Yes

Scan Archives
Yes

Scan Packed
Yes

Scan Files
Yes

Scan Boot
Yes

Scanned File
Status

C:\System Volume Information\_restore{751238CC-FEB5-4605-9EA9-B441EBD3D66D}\RP24\A0007862.exe
Detected with: Adware.Navipromo.BZC

C:\System Volume Information\_restore{751238CC-FEB5-4605-9EA9-B441EBD3D66D}\RP24\A0007862.exe
Disinfection failed

C:\System Volume Information\_restore{751238CC-FEB5-4605-9EA9-B441EBD3D66D}\RP24\A0007862.exe
Deleted

C:\System Volume Information\_restore{751238CC-FEB5-4605-9EA9-B441EBD3D66D}\RP47\A0012006.exe=>(NSIS o)=>lzma_solid_nsis0005
Infected with: Trojan.Obfus.6.Gen

C:\System Volume Information\_restore{751238CC-FEB5-4605-9EA9-B441EBD3D66D}\RP47\A0012006.exe=>(NSIS o)=>lzma_solid_nsis0005
Disinfection failed

C:\System Volume Information\_restore{751238CC-FEB5-4605-9EA9-B441EBD3D66D}\RP47\A0012006.exe=>(NSIS o)=>lzma_solid_nsis0005
Deleted

C:\System Volume Information\_restore{751238CC-FEB5-4605-9EA9-B441EBD3D66D}\RP47\A0012006.exe=>(NSIS o)
Update failed

Que dois-jefaire maintenant?

J'ai un autre soucis: c:\windows\system32\cryptsv.dll\[UPX]!!!
Impossible à enlever!!!!!!!!!!!!!!!!!!!!!!!!!!

Merci d'avance à tous