Hi, I am thinking about buying a refurbished macbook pro and the only thing which I might like to get is to maybe upgrade the memory since to 4gb instead of the 2gb that it comes with. I don't really know how the applecare warranty works(which i plan on getting) for upgrades, do they prefer it if you get them to upgrade the memory themselves? I myself wouldn't be comfortable enough with laptops to install the memory myself. Thanks. Also, is there any way to get them to upgrade the memory before they ship it, I didn't really see an option to do that so I am guessing no. Thanks again.