on a macbook pro 15" I only got the 80gb hard drive because i already have a 300gb external. I've then decided that I really want my music on my internal HD as well as my pictures. (40gb music + 10gb pics) , between those, my OS install, and all my applications, I don't have enough room on my internal. cliffs: Is there a way for me to upgrade to the 120 gb internal HD at this point? or am I shit out of luck? thanks..