Hi, recently I bought 8 GB of RAM for my late 2008 MacBook Pro. It is a 2.8 Ghz 15" MacBook Pro. Now I bought a new 15" 2.2 Ghz Intel i7 MacBook Pro and I was wondering... can I use the same RAM on this MacBook too? I'd like to switch the RAM between the 2 Macs, so that my new mac has 8GB of ram and my old one only 4GB. Is this possible or do I need a different frequency ram model and in case, what kind of ram do I need? Thanks in advance to everyone!