Factory alarm

Just bought the factory keyless entry FOB from Toyota for my 1990 All Trac. Anyone know how two program it?
FYI- It has just two buttons?

Turn the ignition key to "run" press the button on the control box twice under the seat, look for the red led to go solid near shifter, then choose which button you want to lock and in lock the car by pressing it. And your done.programed one remote two cars ;-)

-Jr