Run your anti-virus program and scan all files on your PC. If you are able to reboot the PC and select SafeMode, do your scan in this mode.
If the worm is found in the System Recovery Folders, turn off the System Restore functionality, reboot and scan your PC again.
SafeMode = Press F8 when PC beeps during reboot.
System Restore = Right-click on My Computer Icon and select Properties, then the System Restore Tab. (Don't forget to turn this back on when you've got rid of the worm.)
Pop, November 2004