I use Spybot Search and Rescue. It works OK but does take a while for it to search but it goes into everything, even finding trackers from those sites that we tell our wives that we weren't in visiting! :huh:
If you run Spybot, Adaware, and any of the other spyware programs each one seems to pick up different spyware programs. Try to use at least 2 programs at the same time. Run one and then run the other. I guess you never get rid or can stop all spyware.