what i have done when screwed up like this & it won't fix was to save the info, blow the drive out & reload windows & programs from scratch, do all the virus & spyware programs updates than load back your info. is up to you which way to go.
Have you tried using Spyware Doctor, SpySweeper, or Counter Spy? Spyware Doctor: http://www.download.com/Spyware-Doctor/3000-8022_4-10377263.html SpySweeper: http://www.download.com/Webroot-Spy-Sweeper/3000-8022_4-10405877.html Counter Spy: http://www.download.com/CounterSpy/3000-8022_4-10375153.html Microsoft Antispyware: http://filehippo.com/download_microsoft_antispyware.html Bazooka: http://www.download.com/Bazooka-Adware-and-Spyware-Scanner/3000-8022_4-10377953.html?tag=lst-4-10 Hijack This: http://www.download.com/HijackThis/3000-8022_4-10379544.html?tag=lst-4-9 If you could post a log from Hijack This, we can probably help better...