ok i know this topic has been beat to death but i was doing several searches and i havnt found an exact answer. i have a 2.16 ghz macbook so if i get 4 gigs it will only recognize 3.3 of that... i think im just going to upgrade to 3 gigs total as opposed to the 4, i dont think the extra .3 will help all that much... anyway, thats besides the point.... what kind of ram do i need? im not forking over the cash to get apple brand, but will regular notebook memory work or do we need a certain type? on newegg they have "apple memory" that is a bit more expensive than regular notebook.... what are the numbers and specs or whatever for the RAM i need? im looking to get a single 2gig stick... THANKS!