About to get first Mac, 21.5" base imac, where do I start? I mean should I reinstall software? or just have at it the way it arrives? Should I do anything before connecting to the Net for the first time? Should I start loading files from my old pc? or wait until I'm more comfortable with the new format? Is there a "Mac" email I should start using in-place of my old ones etc..... Sorry for the dumb questions Any advice or good links?