Both Clamwin (non install version at portableapps.com) and AVG are very solid systems. AVG > norton, even if you do pay out the ass for it. There is also a free spyware deal at free.grisoft.com (Where you download avg from, at the bottom of the page) AVG windows version even works on vista... Well, I should not say works - if it did it would shove the @#$%ing OS out the door.

Bipper