keying an old door lock

I lost the right door look in all the bags and parts in my garage. I bought a new one without a key. I would like to use the key I have for the ignition and left door. Anyone know if you can rekey the door locks or are they set and there is no way to change them.

Thanks Dale

Dale,
the lock cylander can be rekeyed. Take the new cylander and the key you want to use to a locksmith. I have done this many times.
Bill

Thanks for the help Bill.

Dale

I am on my way to the locksmith.

Dale