Can't remove trojans, help please

Internet Explorer and Avast Antivirus wasn't working so I found the following from a bitdefender scan:

C:\hax.exe: infected with Trojan.Proxy.Ranky.BA
C:\hax.exe: disinfection failed
C:\WINDOWS\system32\nwiz32.exe: infected with Backdoor.Rbot.GEN
C:\WINDOWS\system32\nwiz32.exe: disinfection failed
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>arrow1.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>arrow2.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bck1.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bck2.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt11.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt12.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt13.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt21.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt22.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt23.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt31.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt32.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt33.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt41.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt42.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt43.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt51.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt52.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt53.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt61.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>bt62.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>checkbox1.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>checkbox2.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>checkbox3.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>checkbox4.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>default.skn: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>defbtn1.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>defbtn2.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>defbtn3.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>glyph1.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>glyph2.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>glyph3.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>glyph4.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>glyph5.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>glyph6.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>glyph7.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>main.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>preview.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>sprite1.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>tab1.bmp: password protected
C:\Program Files\Lavasoft\Ad-Aware SE Personal\Skins\Ad-Aware SE default.ask=>tab2.bmp: password protected

Here's my HJT log:

Logfile of HijackThis v1.99.1
Scan saved at 12:48:14 PM, on 5/16/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\HPConfig.exe
C:\Program Files\HPQ\Notebook Utilities\HPWirelessMgr.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\WINDOWS\system32\conime.exe
C:\HJT\HijackThis.exe

O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [SynTPLpr] C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=36467&clcid=0x409
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1109750565800
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2004061001/housecall.trendmicro.com/housecall/xscan53.cab
O16 - DPF: {80DD2229-B8E4-4C77-B72F-F22972D723EA} (AvxScanOnline Control) - http://www.bitdefender.com/scan/Msie/bitdefender.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMessengerSetupDownloader.cab
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: HP Configuration Interface Service (HPConfig) - Hewlett-Packard - C:\WINDOWS\system32\HPConfig.exe
O23 - Service: HPWirelessMgr - Hewlett-Packard Co. - C:\Program Files\HPQ\Notebook Utilities\HPWirelessMgr.exe
O23 - Service: iPod Service (iPodService) - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe

Help to remove the trojans would be most appreciated