Powerbook as display/HDD for Powermac????

Hi, boney. No, your Powerbook display can't be used as a monitor for another computer. An engineer/programmer might be able to detach it from the Powerbook, connect it to another computer, and write a custom driver to make that connection useful, but that doesn't sound like what you have in mind. Any connection that would allow the display to be used with another computer would render the Powerbook unusable.

If you connect the two computers via ethernet, they remain two independent computers. If you wish, you can easily set them up so that each has access to all the files on the other's hard drive. But neither can use the other's hard drive as a startup disk, since each has to start up independently to be visible to the other over the network. And neither can use the other's processor, memory, audio or video circuitry, monitor, etc., under any circumstances.

Using Apple Remote Desktop, with which I'm not familiar, you might be able to control one computer from the other, but it would still be running as a separate computer from the one you were sitting at — you'd just be running it remotely.