I changed my steering column. How do I reset the com. to work with new keys. on 1991 Cadillac Seville

I went to a Cad. Dealer they took the old keys and the ones that came with the column I put in made keys but they did not work. How do I change Comps, in this car. I can get the comp. from the car I got the steering column out of will that work.

Asked by for the 1991 Cadillac Seville