Hi, My superdrive died some time ago in my C2D macbook pro. This was their first release of the c2d mbp. I'm considering either getting an external or putting a new superdrive in. 2 questions: Are the current superdrives any different then the ones in my machine? What are the basic specs of the piece I'm looking for? and, is this a part that is (somewhat) easily replaceable by the user, or would I need to get a professional to install it? Any and all help is appreciated as I'm trying to do this very soon! Thanks!