I've got a 2000 Grand Prix SE with electric locks but no keyless entry. I bought an Astra 50 keyless entry system and am wondering if anyone here has installed one and my have some advice to share before I take a crack at it.

I plan on only using it to lock and unlock the doors and to pop the trunk.
The starter disconnect and other features like flashing lights or honking the horn are not important to me. I just want to be able to do the basics!