I have a week old early 2008 MBP that I've put 4GB of DDR2 memory in. I'm returning it to Apple though to swap for a late 2008 model MBP. Can I put the DDR2 memory out of my old one into the new? I'm not fussed about a small performance loss, but I wouldn't mind avoiding re-buying 4GB of RAM so soon. I plan to put 6GB (or 8GB if Apple enable it somehow) in once DDR3 prices have dropped a little. Will it work?