close the lid on ur ibook, so that it will go to sleep mode. then use either a usb connected mouse or bluetooth mouse to wake the ibook while the lid is still closed. with bluetooth, make sure you checked the box that allows bluetooth peripherals to wake ur lappie up. i think it's in the bluetooth panel under system preferences (or some variation like that). and i think u also can use the apple remote to wake the ibook.

hope that helps.