See if you can download Super Anti Spyware. It is free and can be found here.

It sounds like a lame program, but it finds and fixes things that Spybot, Adaware, AVG, and CCleaner don't fix. It is honestly the best program that I have used for deleting nasty files. If you can't access the website, PM me and I'll rapidshare the executable for you.

Also, make sure to boot up in safe mode when you run the scan, as it will be able to scan more files that way.