I'm using Windows XP pro SP2 and im not sure what should and shouldn't be running. Oh, i see what you're talking about, disabled some services that wheren't microsoft, let me see if that helps anything.
EDIT: Nope, didn't help it. Still using up all of my CPU. Any other suggestions?
EDIT2: Ha, i fixed it. Instead of killing the whole process, i used Process Explorer and killed the thread that was causing it.