http://www.neuber.com/taskmanager/download.html
This thing actually works.
Nothing could remove istsvc.exe from my system tonight. NADA. It kept reapearing after each scan and clean by Webroot Spysweeper which was always hailed by the industry as THE BEST app ever for removing spyware.
Well, after hunting around trying to find a fix for the issue I found this app. It's a sweet task manager that actually has links that show what each proces is (by hitting 'google it'), assigns the risk probability and shows you a page of what others have to say about the file so you know if it's really spyware or just an obscure program that's fine.
It's able to end ALL processes, even protected ones, delete them and even quarantine them. The best bet is to just quarantine ones you aren't sure about as the quarantine viewer is able to put the files back and add the registry entires again if you chose so incase it was actually a legit file that was needed by an application or piece of hardware to run.
This app actually works and solved my spyware problem.
http://www.neuber.com/taskmanager/download.html