[Turk]

Norton Antivirus wouldn't have helped in this case.
The virus was out before there was a fix.
If you were infected before the cure, there wasn't a whole lot AV programs could have done.

Its worst danger is that it opens up a TCP port somewhere in the 3000 range that would allow someone to remotely adminster the computer.

I got infected when Norton was already aware of it, but didn't have a fix for it until later in the day.

Best advice is NOT to open attachments that look suspicious.

TURK

POP-UPS: If you are already using Google Tool bar (hopefully downloaded directly from Google website) it has a Pop Up blocking feature that is 100% effective,