SpyBot Search and Destroy

Search your hard disk for so-called spy- or adbots, the modules that are responsible for showing ads and transmitting information back to vendors. If SpyBot Search and Destroy finds such modules, it will remove them or replace them with empty dummies. In most cases, the host software still runs after removing the bot.

Among the adbots SpyBot targets: Aureate, CLPRS, Comet Cursors, eZula HotText, Gator, GoHip, Radiate, WebHancer, and WildTangent.
Spybot removes your usage tracks (last visited Web sites, opened files, started programs, and cookies), so even spybots that are unknown can't transmit this private information. The program supports all three major browsers: Internet Explorer, Netscape Communicator, and Opera.
More info:
hxxp://spybot.safer-networking.de/index.php?lang=en&page=news

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[BigDadday]

Ad-Aware 6.0 is my choice as well and I have learned the hard way and thankfully I had this because I loaded my box up from 1 place with spybots and adaware got rid of them all.