I have gained a lot from this board, and some of the great articles/suggestions/advice put forth by the members. This is one small way maybe I can give back!
As you probably know, many upscale cars have built-in transmitters, that conform to the HomeLink protocol, allowing you to open garage doors, gates, etc, without having to carry a separate transmitter. I really like it, and it irritated me highly when I couldn't get mine to program properly with a new garage door opener today. I finally found the answer, and want to share it to others who might face the same thing.
Garage Door Opener Programming