To verify whether the App is already registered, choose "Preferences" from the "ShredIt X" menu. - If the App is unregistered, the "Register" dialog will be blank. - If the App is registered, the "Already Registered" message will be displayed. In addition, if the App is registered, the Register Dialog Box will not be displayed when you run the App. - If you are already a registered user and you have downloaded a free upgrade, your old registration information is retained. You don't need to re-register.