It is VERY important to remember that automated tools and scans are only as good as their dat file. I have found that an easy tool to use while online is http://housecall.trendmicro.com/

They do a pretty decent job. It gives you a start on your cleaning. Then I would use Ad-Adaware and System Mechanic behind it.

I'm glad to see people understanding that one tool, one scan doesn't work.