How to tell if car has keyless entry?

I have a 2000 Grand Am Se. I purchased it stripped and used and was wondering how I would tell if it was ever equiped with a keyless entry.You need to look for the RPO (Regular Production Option) Sticker on your car.

The code for keyless entry is AU0.

The sticker looks like this:

http://www.vibratesoftware.com/images/RPO%20Code%20Label%20Marked-%20Small.jpg

Common locations for this sticker are your glove box, the underside of the spare tire cover in the trunk or on the trunk lid.