If you are already a registered user of MS 1.2.1 or 1.3, simply drag a COPY of your "MS UserKey" file from your old Meteor Storm folder into the MS 1.4 folder ( replacing the existing file, if any ). When you run the game, you will be asked if you want to update your user key for compatibilty with 1.4. Click "Update", and you're ready to go!