I think when I booked with them they just wanted me to give them my @.edu email address and write back to them from it to confirm.. They should tell you on the website what they want.
"All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity: but the dreamers of the day are dangerous men, for they may act their dreams with open eyes, to make it possible. This I did."
-T.E. Lawrence, Seven Pillars of Wisdom