I am a television news story producer. I tend to be editing video projects on my Powerbook, however I have run into a little bit of a snag and that is that I can not always leave my Powerbook "open" while it is rendering as I need to run to a series of meetings throughout the day. Is it possible to set some option somewhere that will prevent my Powerbook from going to sleep? It would sure make my life a whole lot easier, rather than needing to pause a render, close my PB, walk down the hall for a meeting, pop it back open, restart the render, open Pages and start taking notes. Any help will be greatly appreciated.