So if my current store wont let me return my 4 day old MBP, how does one go about adding a bigger + faster HD? I already got a 300 rebate on my current MBP (they wouldnt waive the restocking fee), so i cant just pay the restocking fee anymore. I really really would like to upgrade to 200gb+ and 7,200rpm. Can I do this without voiding any warranties? Thanks.