Well, for OS 9, start it up with the lid closed, the just put it to sleep, close it, and wake it up with your external keyboard. For OSX, which manages not to support dual monitors, you have to start the Book with the power on button then close the cover quickly. It'll only work after a power cycle; putting the Book to sleep and closing the cover won't activate the external monitor. Hopefully Apple is working on this. I can tell you that the crescent key on a sun USB keyboard won't turn the Powerbook on! Oh well, guess it's kludgy workarounds till Apple fixes t...
--J