Enterprise Subordinate CA with Windows 2003 Server

I have an Enterprise root CA configured on my Primary Windows 2003 Server which I use to authenticate my Clients and PC with PEAP and TLS authentication. Now I have a secondary Server with Windows 2003 Server with the same setup which I will be using as a backup server. I want to be able to authenticate also using PEAP and TLS. How do I setup certificates to work on my Secondary server. Do I install the same certificates or is there a way to copy certificates onto my secondary server.