do they all operate on the same frequency? i have a programmable garage door opener in my car, and i'd like it to open the gate as well. popping open a gate opener i see no way to program the information, so i am assuming the frequency information is printed on the back in code. thx edit: i have an opener from a garage door with those dip switches in it to program it. i have two buttons programmed for my parents' house. one button is left free. i want it to open the gate to my apartment. but the apartment remote has no dip switches in it to copy. so i guess what i really want to know is how to figure out the codes on the back of the apartment remote so i can get my $100 deposit on it back. and have one less thing hanging from my visor.