2000 Bonneville keyless entry programming ?

Can anybody tell me how to program a keyless entry remote for a 2000 Pontiac Bonneville ? Car came without them but dealer gave me numbers (25665574 #1 & 25665575 #2) which I found. Now if I could just find out how to program them. So any help will be greatly appreciated. I'm halfway there!

Thanks in advance

My 97 programs by holding down the lock/unlock buttons simultaneously for about 7 seconds until the headlights blink....then it's programmed.

did holding down the lock/unlock buttons for 7 seconds work to program you bonneville? I need to program my replacement as well.

Thanks