Ok so I'm finally upgrading my ibook, I'll be buying the black book from best buy today and I want to add 2gigs of memory. Heres my question, if I buy this 1gig stick of ram from best buy (Kingston Technology 1GB PC5300 DDR2 SoDIMM Notebook Memory) will my 2gigs of ram be a "matching" pair? I have heard that you want the macbook memory to be matching for performance reasons. Any help would be greatly appreciated! Thanks