I also use SpywareBlaster
http://www.javacoolsoftware.com/spywareblaster.html
SpywareBlaster doesn't scan and clean for spyware - it prevents it from ever being installed.
By setting a "kill bit" for spyware ActiveX controls, SpywareBlaster can prevent the installation of any spyware ActiveX controls from a webpage. It does this while not interfering with "friendly" ActiveX controls - so your browser can work correctly and you can have peace of mind!
SpywareBlaster does not need to be running in the background to provide this protection!