Hey, Im looking on ebay at a macbook pro, it has a 1.83Ghz Processor, 2Gb Ram and 80Gb HDD. Can anyone advise if this is a good Macbook to go for, considering all i do is word processing, watching movies, and the occasional play on Photoshop. My main concern is the size of the HDD, can someone advise on how upgradeable they are?! Is it easy to do myself? How much would i pay for a decent HDD?! Your Prompt Response would be appreciated!