1995 Isuzu Rodeo remote programming

My son found out the hard way today that if your car alarm is armed and you don't have the remote, the car is immobilized.:banghead: He lost one of the remotes and the other one's case is broken so we need to get a new one. The model number on the back is GOH-MM6-101890. The remote says Code alarm on the outside. I can find replacments all over the web, but no instructions as how to program it. I can't seem to find a program override button for the alarm. All I have found under the dash is what looks like a wired remote with a white knob that turns and says Sensor on it. Can anyone help? It would be much appreciated.

This one?
http://www.autotechs.com/items/item109.htm

The right sidebar says they offer programming instructions (if you buy from them), but you might could give them a call anyway.