If you are using Windows ME or XP and have System Restore enabled, your
computer may be saving a copy of the virus that you think you removed. You
may need to manually delete files stored in
C:\_RESTORE\ARCHIVE.
To disable System Restore in Windows ME, right-click on My Computer and select Properties. Click on the Performance tab and select File System at the bottom. Click on the Troubleshooting tab and check the box that says Disable System Restore. Click OK twice to exit and restart your computer when prompted.