So I'm on the apple website looking through the options before I go to the apple store tomorrow to make my purchase...please go easy, this will be my first mac. I know I want a Macbook, but should I upgrade the RAM? Is 2.0 ghz w/ 160 GB HD enough or should I splurge and buy a 2.4 ghz w/ a 250 GB HD? (any other choices I will have to make tomorrow?) I have a lot of music, but I won't be using the computer for any heavy-duty work. Do I need to purchase any additional software? Also, do both models come with the backlight on the keyboard? Any help would be greatly apppreciated, I am just trying to get a better sense of what I need before I show up at the apple store. Thanks!