Hey, I currently have an almost two year old MBP (2GHz, 1 GB RAM, 80GB HD) and will be going off to college next year. The one thing that i worry about my current set up is battery life. I use my computer daily in high school to take notes in certain classes. Im lucky if i get 2 full 45 minute periods of battery life on one charge. I worry that this amount of power wont be sufficient next year when i will be away from my dorm room for extended periods of time. SOO, i am thinking about setting my current comptuer on ebay and purchasing either a macbook or a macbook air. First, how much would i get for my computer (it has a few cosmetic blemishes but otherwise works perfectly)? Second, what are the real-life battery lives for each the macbook and macbook air when using apps such as word and safai? Third, which computer would you recommend for a student going off to college? Thanks for your help?