Hi everyone, I tried searching but couldn't find anything besides the new unibody info. Can someone help me purchase 4gb memory for my MBP? My current memory shows 2GB 667 MHz DDR2 SDRAM. Am I supposed to purchase a "set" of 2 2GB sticks? Or can I just purchase 2 single 2GB sticks? I'm not sure if that makes sense but I've seen some memory that comes with both in one package. If anyone has a link to any good deals, I'd really appreciate it. Also what is my MBP referred to as? I think it might help me search better on the forums. I have the LOW 15 inch MBP that came out right before the unibodies. Thanks for any help!!!