Call 877-996-5999. If you have your production number or VIN, they can help you even if your dealer hasn't. I've worked with three different women there - Andrea, Amy and one other whose name has escaped me - they are all extremely nice and helpful.
Thanks for the info on the school. I have no excuse because the track and school is 3 miles from my office, but I didn't have time to stop and register. My dealer has had "trouble" locating the forms to fill out! The Performance Center, aptly named is the place. Should anyone need additional information, I would be happy to drive over to get it. They have both the offroad track for the X5s and the regular track for all others.