I am new to the digital train world and recently purchased a Spectrum GE 44 Ton Swither which I thought had DCC On Board.  However, I think it is just DCC Ready.  What do I need to purchase to run this diesel with my other DCC On Board locomotives on the EZ-Command Control Center?  Is there a board that I need to purchase?  Currently, I am not interested in sound or other features, I just want to run the locomotive as a DCC locomotive.