keyless entry

my friend bought a wrecked 2002 grand am that didn't have any key fobs to go with the car he was wondering if you could go on ebay and get a couple of fobs even though he didn't have the original fobs for the #'s that you have to give them on the back so they match up. Any help would be greatly appreciatedhttp://files.automotiveforums.com/gallery/showphoto.php?photo=43714&password=&sort=1&cat=998&page=1

go to the pontiac parts department and they will tell him which key fob to get