I have a couple times, but they didn't cause any damage (well I can't remember for sure, but I don't think they did) Sometimes they just sneak in, like the blaster worm.

Grr... that blaster worm. I hate worms like that- hits you and you don't even know how... simply surfing around the net catches it(to me at least)

I never got it. If you keep your windows updated and have a firewall and a virus scanner (don't even need the scanner) you'd be safe from the worm.

PC-Cillin has never let me down since ive been using it 5 years ago
always has been good and it is even better now

but yeah keep your windows xp updated all the time and make sure you have the newest virus definition file too

dumb ms.. there is a known bug and they just "take december off" .. i tried pc-cillin when it came with my last mobo, but just kind of forgot about it so I use norton now