with the recent nimda virus i would like to take the oppurtunity to advise that you do not use PC Cillin Antivirus program.
I ahd this installed on my laptop - it cliams to recognise hundreds of thousands of viri and detect unknow viri. does it ****!
I updtaed the definitions weekly, and it still is useless, i ran FPROT on my system and it detected two macro viri and a BS virus - did PCCillin detect these , NO, even after a full system scan, No!
Cant beat Norton.
£30 - well worth it.
No Anti virus is perfect, as they mostly act as a cure, not a vaccine.