Now I know that macs are picky when it comes to memory, but I cant seem to figure out which are right for my macbook. My computer was purchased Feb 09 so its the poly white 2.0ghz intel core 2 duo with 120gb hdd, at bestbuy they have this, http://www.bestbuy.com/site/olspage.jsp?skuId=8725427&type=product&id=1201306785090 would that work with my laptop? Or is there a compatibility list somewhere? Thanks!!