The plastic edge cover needs to be removed to get to some components.
Unscrew the 20 Phillips screws on the underside of the T42.
Unscrew the 2 Phillips screws on both sides of the T42's rear.
Flip the laptop over and open the screen.
Carefully maneuver the palm rest away from the keyboard, as both the keyboard and palm rest/trackpad will come off together.
Starting from the bottom right, carefully remove off the bezel. Use a spudger or flat head screwdriver if needed.