My 17" Powerbook's scheduled to arrive on Friday. This is my first Mac since about 1988. I've got a few programs to load once I get up and running (Office X, Photoshop, .Mac), but would like some input on what I should do before that. Any tips on things that should be done immediately after taking it out of the box? Anything I should know before jumping in with both feet? I've played around with the machines at the local Apple store. More importantly, I've read (a lot of) David Pogue's Mac OS X: The Missing Manual, Second Edition, so I've got a decent idea of what to expect, but know I'll have a pretty good learing curve ahead of me. However, I was hoping to get some real-world input, or any suggestions you would give (essentially) a Mac virgin. Thanks.