OK, this is the most copies of a virus I’ve ever gotten (180) on its first day in the wild… and it is not even 10:00am! MyDoom is going to be huge.
Update your virus software’s definitions (you DO have virus software, right?) and don’t open attachments you can’t verify. If you do get infected (shame on you… there’s literally no excuse– you have to go out of your way to get it) then head on over to SARC and get fixed.
In addition to self-propigation, this little nasty also includes a back door so that hackers can get into infected systems.