Removal of the Wi-Fi Card.
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.
To remove Wi-Fi card, first disconnect both display wires on the top right.
Then slide both of the metal pieces holding it down outwards, and it will pop up.
Carefully pull it out.