Hello good mac people, I have a 15" macbook pro 2.0 with 1 gig of ram, i need to max out the ram. my question is: do i only need to get 1 chip? do i presently have 512 megs built into the motherboard, with 512 megs in a slot? --in which case i would need to get 2 1 gig chips...?! or do i have one slot with a 1 gig chip in it, and 1 slot that is empty? --also, where to buy ram from? i need fast fast fast.... THANKS! r.