Hiya I got a model of the 13.3in macbook with the 120gb HD....Thats a problem for me now. I have been looking at http://www.newegg.com/Product/Product.aspx?Item=N82E16822152111 (please confirm that that will work). I know how to install the HD, just i have one question. When i go to install that HD and look to install OSX onto it how would i go about doing that? would i just hold the C key when its booting up like a normal install? I do not have a need for a backup all the important stuff such as music and school work are all on externals already.