I would recommend running a legitimate Virus Scan right
away. If you cant do so before your computer shuts down,
you may be forced to start from scratch and redo your
whole hard drive using your configuration disk (the one
you got with your computer when it was new).
VERY IMPORTANT to follow ALL steps, closing ports or installing the
patch is NOT enough.
Download the appropriate patch referenced in Ron Martells article
below.
You may need to do this at an uninfected computer and burn to CD or
save on floppy.
After this is resolved prevent similar occurrences by installing ALL
Critical Updates from Windows Update.
Keep antivirus up to date and run at least weekly.
Install or enable a firewall.