Thank you both. For some reason the lower end refurbs on the apple website do not list the same way as the newer, higher end refurbs..... and there is no indication on the cheaper ones that they are, in fact, aluminum unibody. I wasnt aware of any differences, but i was confused with the way that they're listed. I didnt want to decide on a 1.6, PATA.... and have a cheaper construction also, lol. Thanks again.