by hikaru » Tue Nov 11, 2008 3:33 pm
Most likely there is a screw on the underside of your notebook right in the middle. Maybe it is marked with "k/b". Remove this screw.
You should see some clamps left and right and on the upper side of your keyboard (4-6). Release them, slightly lift the upper side of the keyboard, search for the bus cable and plug it off carefully. Then you should be able to remove the keyboard.
Install a new one in reverse order.