A few things you might want to do if you haven't already while you are waiting on someone who knows a lot more than me....lol!! You could download, update, and scan with Adaware and Spybot Search & Destroy and see if they find anything. Also, if you're having a particular problem with your pc, it would help others to help you if you describe what your problem is, and post your hijackthis log for someone to look over. Just a few ideas while you are waiting for some of the experts here to reply to your post.