Who stole my MacBook wifi card?

After upgrading to the latest Leopard release 10.5.6, my wifi connection wouldn't work. Hitting "turn ON" did nothing.

So I rebooted.

And now, the machine states "no airport card". Gah!

A quick Google search showed that resetting your NVRAM (or PRAM) is a solution that usually works. The first time I only hit restart and might have held the keys down too long and that did not work. The next time I shut down and then held the P, R, command and option keys down for exactly two chimes. That did the trick.