ok im going to college in the fall and i decided to get the 13'' MB Pro. im stuck on weather i should stay with the 250GB hard drive or just upgrade to the 320GB hard drive. also would the apple store physically have the 320GB Macbook pro 13'' in stock at the store? and finally im using my college discount. now do you have to show them anything at the store and/or do i have to do anything should i order this online? sorry for the long post and thanks for your help.