I agree... formatting is drastic but sometimes it is the only answer. HOWEVER...
Do what Joe says, great advise, I want to add to Hijackthis: Run the program and look at the results(takes about 2 seconds to get the results... it is awsome). Discard anything that is obviously a Win program. ANYTHING that you don't know what it is, copy and paste on the search bar in google or the website the Hijackthis creator has for this specific purpose. You will find that option in the prog.
Also...I want to add to the downloads:
Get Firefox from www.mozilla.org and ditch Explorer
Get Zonelabs Zone alarm, the best, bar none, firewall available at this level. It is a freebie that you can upgrade and get excellent support.
If you need another antivirus(I am sorry to tell you that McAfee leaves a lot to be desired) get AVGFree from grisoft.com. It updates daily and provides email scanning, but the best feature is its price... FREE.
Daddy0h
September 2005