K here's the deal: My wife uses our old intel blackbook from 3 ½ yrs ago, still running Tiger with a 120GB HDD and 2GB RAM. I'm upgrading her to snow leopard, and I am wondering if I can swap my 250GB HDD in my unibody macbook into her blackbook, and buy a 320GB 7200 rpm drive for my UMB. I use more memory than she does, and I would love a snappier drive in the 7200. Both of our current macbooks are 13" and both drives are 5400 rpm drives. This is the best deal I've found on the drive I want. Good deal?? Thanks a TON for any help.