PROM Location 93' Lumina

I have a 93' Lumina 3.1L. I just got a new PROM chip for it. Where is it located? It pretty much looks like ya take the old one out & plug the new one in. I was thinking I could do it myself instead of waiting til next week for my cousin(mechanic) to do it. Thanks for any help!!!

Nevermind... FOund it here:

http://westers_garage.eidnet.org/gmbox.htm

I think I'll wait...