Attaque virus - Log HiJackThis a interpreter

Bonjour,
j`ai tres certainement chope un virus en telechargeant des merdes sur LimeWire, je sais, c`est pas malin !
Toujours est-il que maintenant, je ne peux plus rien faire, aucun programme s`ouvre au demarrage, plus d`acces internet et mon bureau apparait et disparait toutes les 5 secondes !

J`ai quand meme reussi a passer hijackthis et voici le rapport :

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 16:06:22, on 23/11/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16544)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Arquivos de programas\GbPlugin\GbpSv.exe
C:\WINDOWS\WinLogT.exe
C:\WINDOWS\explorer.exe
C:\Documents and Settings\Alban\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr/?ocid=iehp
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = https://outlook.live.com/owa/
O4 - HKLM\..\Run: [WinLogT] C:\WINDOWS\WinLogT.exe
O8 - Extra context menu item: &D&ownload &with BitComet - res://C:\Arquivos de programas\BitComet\BitComet.exe/AddLink.htm
O8 - Extra context menu item: &D&ownload all video with BitComet - res://C:\Arquivos de programas\BitComet\BitComet.exe/AddVideo.htm
O8 - Extra context menu item: &D&ownload all with BitComet - res://C:\Arquivos de programas\BitComet\BitComet.exe/AddAllLink.htm
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\ARQUIV~1\MICROS~4\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Arquivos de programas\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Arquivos de programas\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: BitComet Search - {461CC20B-FB6E-4f16-8FE8-C29359DB100E} - C:\Arquivos de programas\BitComet\tools\BitCometBHO_1.1.9.24.dll
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Arquivos de programas\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\ARQUIV~1\MICROS~4\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: @C:\Arquivos de programas\Messenger\Msgslang.dll,-61144 - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Arquivos de programas\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: @C:\Arquivos de programas\Messenger\Msgslang.dll,-61144 - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Arquivos de programas\Messenger\msmsgs.exe
O14 - IERESET.INF: SEARCH_PAGE_URL=&http://home.microsoft.com/intl/br/access/allinone.asp
O16 - DPF: {02BF25D5-8C17-4B23-BC80-D3488ABDDC6B} (QuickTime Object) - http://appldnld.apple.com/QuickTime/qtactivex/qtplugin.cab
O16 - DPF: {DB6BF2CD-4F59-4F1C-AA9C-D08C0B61A931} (GbpDistObj Class) - https://www14.bancobrasil.com.br/plugin/GbpDist.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\ARQUIV~1\ARQUIV~1\Skype\SKYPE4~1.DLL
O23 - Service: Gbp Service (GbpSv) - Unknown owner - C:\Arquivos de programas\GbPlugin\GbpSv.exe