Head up to the test center at N330, take a free practice test in the study hall, and then take and pass that exam... and you'll get your name added to the Wall of Fame (oh, you heard me! WALL OF FAME!!!) and you'll be entered to win a Zune... winner to be drawn tomorrow (Friday) at 1pm.
PS when you are up there please say thank you to the trainers in the orange shirts who are doing an amazing job as ambassadors, helping you pass your exams. I went to half of the Vista cram session last night and I thought it was excellent.