You can always call and ask, because you never know.
But you can create an account on the Disney.com site. Create and save a few trips.
My advice is to not visit the site again for awhile after you do this, because then Disney tends to send out PINs for your dates to try and entice you.
Others reported booking trips and cancelling them, then getting PINs via email or snail mail to entice them.
Some people say that they keep getting PINs after they booked a trip, but my personal theory is that this has to do with having multiple emails or addresses registered with Disney (because most evidence points to not getting a PIN if your activity with past trips and site visits make you seem like a sure bet to pay full rack rate).