I use a Mac.
Nah, AdAware and Spybot S&D always did the trick for me when I needed to get rid of anything.
Funny thing is, free stuff worked better than the Norton crap that you can buy. Any time I did a scan with Norton (every Friday that dumb thing would pop up) and it would never find ANYTHING. If I knew my system was running somewhat irregularly I would try Spybot and Adaware and sure enough, it would find something.