It would seem you are on the right track now...
The Advice from Valhallen and foxyloxley is sound and I would make the same recommendations. Especially given the number of files AdAware detected!
867 - man that's quite a few, don't think I've ever seen, heard, or even been told rumours of people with that much crap on their system! lol
It may be wise to setup several accounts on your XP system and only use the admin account when you want to install. Do not, I repeat, do not use an administrator or equivalent account to surf or for general work. Have a look at Pooh sun tzu's tutorial ....
http://www.antionline.com/showthread...hreadid=255353
Other than that, I would recommend the line you are taking, i.e. downloading the Firewall, Anti-Virus, registry monitor, adaware / spyware removers of your choice and their updates and storing them for after a clean install.
Note: It would be wise to install at least the firewall and Anti-Virus right now! Like foxeyloxley, I can not stress this enough. Get protected! This should be your highest priority. Save a clean install for when you have time and don't rush it!
Spend some time reading relevant tutorials on AntiOnline. Here's a couple of links to start you off...
Security Tutorials:
http://www.antionline.com/forumdispl...?s=&forumid=59
Basic Internet Security:
http://www.antionline.com/showthread...hreadid=260373
Hope these help to point you in the right direction. Here's to your weekend activity.
Oh! As for AOL - may be they should be educating their customers with regard to safe computing and good security practices.
Dump them and get a better ISP! I never have and never would recommend them, not even as a last resort! ;o)