I'm moving into college in about 15 days and I currently own a year old 15 inch 1.5 ghz Powerbook. Lately I have been eying the 17 inch (but I haven't completely ruled out the 20) iMac. I figure I could bring both to college. I'm majoring in Computer Information Systems in college (if that means anything at all to the topic). My question to you all is, would it be really unnecessary to get the iMac since I still have a relatively new Powerbook? I would really want/need the iMac for the multiple video conferencing capabilities...well to host them at least.