Great! Seems like you must have registered for Rocktoberfest. Get your reference number out, type it below, and you'll get your fancy Pre-Registered PDF. Save it to your smartphone (or print it out if you'd prefer) and take it with you Rocktoberfest weekend. Believe us, you'll want this to help you skirt the lines at the registration desk.
(If you don't have it already, get Adobe Reader)