I'm looking to upgrade the RAM on my 2.16Ghz CD2 Macbook pro. If I remember correctly, the specs said that the maximum amount of RAM was 3GB. There are two slots. Does this mean that I can only do a 1.5GB stick, or can I do 2GB (there's a 1GB in one slot right now, while the other is empty)? I posted this here because there are probably people here who have upgraded memory on this type of macbook pro (since this forum has more than its share of mac users). Also, does anybody have any recommendations on third party memory (I don't feel like paying a fortune for apple RAM)?