Mac Book +ram?

I don't really know much about the total amount of ram that I can put on my mac book (13' MacBook Core 2 duo w/ 2ghz processor) I looked on some site and some said 2gb in each slot tops, and I have 2 slots, and others said you can only have 2g total. Could anyone clarify this for me please? And also, if I were to get the ram, what speed wold I get? I looked in the System profiler and it said the ones I have now are DDR2 SDRAM @667 MHz(have no idea what any of that means), does that mean I have to get 2 2gb sticks of ram @ 667MHz?
Thanks

If it's the latest macbook (post november 07 I think) then it can support 4GB (2GB+2GB) The model prior to that supported maximum 3GB (2GB + 1GB). However, if it's one of the first models of the macbook, then 2GB is the maximum RAM supported (1GB + 1GB)

The RAM you need to buy is SODIMM DDR2 667MHZ type. Basically, notebook memory.

Hope that helps.

also let me add that it needs to be 200-pin

I wonder why this isnt a sticky yet, its asked about once every 3-4 days

i find that on crucial.com, their little "config" tool is wonderful for ANY SETUP. I continue to use it to get proper ram specs for egg purchases!