Been working on it after I got a PM from the OP . . . I think we're in the clear, just waiting to hear back on final results.
Can't answer your question as I don't know what else was used, but I suggested AVG Antivirus Free, AVG Anti-Spyware, Adaware 2007, and Spybot Search & Destroy. The HijackThis log suggests TrojanHunter, AOL Anti-Spyware and SpySubtract were also used, or at least installed. The log was clean as far as I am aware except from a Zango toolbar which I gave instructions as to how to remove, and out of date Java (Java 6 Update 1) which gave instructions to update.
Lots of stuff running in the background though, I suspect that the computer is running very slowly because of this.