Hi, I just recently bought a powerbook that will be arriving next week! I'm excited, as i'm moving up for my first mac, an ibook, that I bought this summer. I have a few questions. 1) What is the max RAM for this model? 2) Is the back-lit keyboard an option or standard on this model? (this one that I bought just has a regular combo drive) 3) Are the hard disks 5400 rpm? 4) Was bluetooth incorporated on this model? Thanks!