http://www.komando.com/

try that site. kim kommando has a radio show dealing with that kind of stuff and she's got a bunch of ways to attack your problem. all free.

if your operating system has a "system restore" like xp or "go back" like some gateways, you can revert the drive to a time before the trouble started. you will lose anything done since then but you'll be clean.

good luck


dan