i just want to know if i can have my powerbook working on stuff, shut it, put it in its case and get on the train. get off and, wow, all done, task complete. or if it just zonks out and i have to wate for it to finish. if im not being clear- i want to know if it will preform already initiated tasks at full speed when the screen is closed. and if not is there a way to tell it to?