My browser has been hijacked

Hey everyone, I have been having some problems with my browser (IE) being hijacked and I have been getting pop-ups when my browser isn't even open. Also, am frequently finding pages in my Favorites that I did not add. I have run a ton of anti-spyware programs: Spybot Search & Destroy, Ad-Aware, Spy Sweeper, HijackThis, and a couple others. Any help would be greatly appreciated. Here is my HijackThis log:

Logfile of HijackThis v1.98.2
Scan saved at 10:46:46 AM, on 11/26/2004
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\MSTask.exe
C:\WINDOWS\System32\WBEM\WinMgmt.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\dllhostxp.exe
C:\WINDOWS\msagent\agentsvr.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\WINDOWS\explorer.exe
C:\unzipped\hijackthis\HijackThis.exe

O15 - Trusted Zone: http://*.63.219.181.7

see http://www.techspot.com/vb/topic17297.html