While Apple touted that you could starting today reserve your iPad for pickup at an Apple Store - they sure are not making it easy to find out how to do so.
After waiting on the phone for 25 Minutes with Apple support - They spilled the beans. Go to
http://www.apple.com/retail to reserve your iPad for pickup. There is a big section right now for the iPad at the top of the page - if it is not there when you go - here is another
link you can try.
I reserved mine and will be at the Apple store in Leawood for pick up of mine prior to 9:00 AM when they say the iPad will be available. See attached pic for more info.