help with toyota alarm, my dealer is an idiot! Options

[ScoobyDooCruiser]

I bought my 94 Celica from a dealer so I've got no history on the thing. It came with an alarm and remote. Its a TVSS (toyota vechicle secruity system) alarm. It came with a short little manual. It works great, except every time you lock or unlock the car with the remote, the horn beeps. The manual says I can turn that off, "See your local Toyota dealer."
So I see the dealer, and he says it was not facotry installed, it must have been a dealer option, so he can't help me. He says that the alarm doesn't exist in my car. Its there. It makes loud noises if i set it off. He says it doens't exist for my car. The dealer is stupid.
Anyways. He can't help me turn the horn off. Does anyone know how I can do this? The alarm console has a program button, but I have no idea how to use it. Is there a way to reprogram it, or can I do some eletrical work to supress the horn on the locking an unlocking. Any ideas?

[exxtractor]

my viper does the same thing, except if I hit the aux button then my lock.unlock button I don't get the chirp. But I think its helpful to have the horn signal if the alarm is set, I know I walk a good 5-10 steps before I lock the car out of habit, and its the chirp which lets me know the car is locked and the alarm is on.