Hi cloedog,
The last thing I would try is a complete scan of C: with bitdefender 8, and see after that. Else you come to a certain conclusion, and the conclusion is:
It is always a sad thing when a computer has come so overrun by malware, that is has become compromised to such an extent, that the only option that seems left is to save all your personal data and documents etc. on separate disks, including the mail address book, mails etc. and do a complete reinstall, run updates, servicepack 2, safe browser, AV, firewall and the anti-malware programs suggested, and be a wiser woman for it.
I had to do it once due to a hacker, burn all my valuable data via a knoppix cd with Nero creating an image. Complete reinstall and at that moment this bloke was ready to join the one and only AVAST forum. Now a lot of things I did in previous days, I do not do anymore. Some like little old me had to learn computer safety the hard way.
Keep smiling,
polonus