I think i just replied to your other post. I forgot to add that the E36 wasnt originally designed to have remote locking. The keyfob is the BMW add on that comes when the car is manufactured. I think its a Cat1 alarm in most cases. The key set you are given is typically for one user.
1 Master key (Black)- with the yellow light and immobiliser circuitry.
1 Grey key with no light
1 Black key with no light
1 flat black key (all plastic) for fitting in a wallet or something.
1 key fob (corner appears chopped off) with one grey and one red button.
am i right?