I'm about to order a 2.3 GHz PM and would really like an extra 400 GB internal hard drive. If I get Apple to put one in as part of the BTO process, it'll cost me an arm and a leg! So my question is, how easy would it be for me to install one myself?... bearing in mind that I'm a long-time Mac user but not very hardware-confident. I'm happy to install my own 3rd party RAM, but I'm not too sure about connecting up an extra HD... advice please anyone?