Okay, to start out, I've never owned a Mac before, but some of my friends love to use Macs, so I figured I'd try it out. I'm thinking I should get a Macbook Pro, but I have a question. If I were to get a Macbook Pro right now with the current edition of OS X, will I be able to upgrade to leopard when it comes out without having to upgrade my hardware? Also, how much does the upgrade cost? I figured that if I had to upgrade much hardware, or it was too expensive, I would wait until Leopard comes out before getting a Mac, so that's why I was wondering these things. Any help is appreciated, Thanks!