Remove the following 9 screws:

Two 3 mm Phillips from the edge of the logic board, near the battery

Two 4 mm large head Phillips on the port side, from either corner.

One 6 mm Phillips near the sleep light.

Two 7.5 mm Phillips securing the battery connector to the metal framework.

Two 5 mm Phillips from the logic board. These screws may not be present on some models.

There will be two screws remaining that secure the airport card cage to the logic board (can't get them all).