Help! Need to program new key for 1998 626

I recently bought a 1998 626 w/ only 1 key. I need to know if I can program one other key or if I need to get 2 new keys to program. I also need the instructions for programming new keys. Any help would greatly appeciated.

you can do just one, but your local dealer has to do that.... we are the only ones with access codes

Okay, thanks for the info.