For a no cost offering, check out;
Spybot Search & Destroy 1.4
http://www.safer-networking.org/en/download/index.html
Low cost commercial offerings include; Spy Sweeper ($29.95), from Webroot Software, Trend Micro AntiSpyware ($29.95), and CA Anti-Spyware 2007 ($29.99)...
http://www.webroot.com/consumer/products/spysweeper/
http://www.trendmicro.com/en/products/desktop/as/evaluate/overview.htm
http://shop.ca.com/spyware/anti_spyware.aspx
note: for integrated AS/anti-spyware ~ AV/anti-virus, the flagship products are; Symantec - Norton AntiVirus 2007 and McAfee - VirusScan Plus....
