Support the display with one hand and remove the single Phillips screw on either side of the hinge (two screws total).

The screws go in the outer holes on each side (you can see the threads in the correct hole).

It may be necessary to unscrew one side of the optical drive for enough clearance to thread the AirPort antenna through the gap between the body of the optical drive and the iBook's internal frame.

When remounting, mind that cables pass under the hinge, not over