Hi I'm new to these forums, and hopefully new to Macs soon as well. I recently found a 2007 15.4" MacBook Pro on craigslist and I was wondering if this would be a good buy, and how much I would be able to upgrade it. http://buffalo.craigslist.org/sys/1852037701.html For my major for college, (audio engineering) it is recommended to have a MBP and a 7200 rpm hard drive. It is also recommended to have Snow Leopard as an OS, and the highest amount of RAM and HD space available. The major problem I have is that I only have about $1000 to spend right now, so even a refurb might clean me straight out, which is why I have been looking on craigslist. As I said earlier, I'm wondering if I would be able to upgrade this MBP to what I would need for my major. Any help on this topic would be greatly appreciated.