Got a powerbook. Started it. Enjoying it. Hooked up the second screen. Bluetooth mouse and keyboard. But this measly 12" is doing little good and I want to use the room for a book. Plus, it looks better closed. Yet, I can't seem to figure out how to get it work in Clamshell mode. I closed the screen and it went to sleep. I couldn't find a option or anything in the displays menu. So, help..... I need to read supposedly.