I have used the Malwarebytes’Anti-Malware to delete all of the viruses, then I reinstalled avast (it is working ok), then I saw your post and used the run fix in the OTS program. After that I can use facebook again. Here are my reports, please replay to confirm if everthing is ok. Thank you very much for your help.

RogueKiller V5.2.8 [07/23/2011] by Tigzy
contact at http://www.sur-la-toile.com
mail: tigzyRKgmailcom
Feedback: http://www.sur-la-toile.com/discussion-193725-1-BRogueKillerD-Remontees.html

Operating System: Windows XP (5.1.2600 Service Pack 3) 32 bits version
Started in : Normal mode
User: Owner [Admin rights]
Mode: Scan – Date : 07/26/2011 01:12:01

Bad processes: 0

Registry Entries: 4
[HJ] HKLM[…]\System : EnableLUA (0) → FOUND
[HJ] HKLM[…]\NewStartPanel : {20D04FE0-3AEA-1069-A2D8-08002B30309D} (1) → FOUND
[HJ] HKCU[…]\ClassicStartMenu : {20D04FE0-3AEA-1069-A2D8-08002B30309D} (1) → FOUND
[HJ] HKCU[…]\NewStartPanel : {20D04FE0-3AEA-1069-A2D8-08002B30309D} (1) → FOUND

HOSTS File:
ÿþ1

Finished : << RKreport[4].txt >>
RKreport[1].txt ; RKreport[2].txt ; RKreport[3].txt ; RKreport[4].txt

And here is the link for the OTS skan I couldn`t get the report after the fix

http://www.mediafire.com/?7b6jjquu8vc6bje