I'm going to college and I want the portability and energy conservation of a laptop but I'm crazy about the imac for it's screen size, hd space, and general beauty. Of macbook and macbook pro owners here, have you ever felt crazy limited by your machine not having the screen size or disk space of a desktop? Would anybody recommend getting a big external LCD for the dorm, or would that likely just be a waste? I know merom and maybe conroe are coming to the line but most speculation seems to be about the imac. Do you think the 64 bit generation will come by mid-August? I.E. a wwdc launch? Finally, if I can get a 64 bit machine out of it, I will likely be buying refurb. Am I correct in thinking this means you can't add RAM at order? If so, Apple doesn't have diy RAM adding guides on its site yet for the MBP (I know the MB is really simple). Would an apple store install 3rd party RAM or would it be simple and not warranty-voiding to do it myself?