Keyles entry

I own 96 328i and recently i purchased a used two button remote for keyles entry.Does anybody know how do i program this to work with my car.Dealership might charge me to this for me and i dont want to pay 50 bucks for that.
Thank you

First of all 50 bucks is cheap for the dealer to do anything to bim. But I am installing my keyless entry/remote start as we speak will let you know what i hooked up to make mine work. Keyless entry alone should be very easy.