DISCONNECT the subject computer from any network IMMEDIATELY.
VERY IMPORTANT to repair, closing ports is NOT enough.
Download the patch from the Windows Catalog. http://support.microsoft.com/?kbid=323166
You want: 823980
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.
