Rose: I have been using the microsoft anti-spyware tool for about a month. It gives you more capabilites in fighting browser hijackers and plug-ins. I haven't had a problem removing spyware with it...yet. I was using the free version of ad-aware, but it couldn't remove some spyware. I actualy bought the upgraded version and it finally did remove some pesky spyware (not even spybot could remove them).