If it is a Neptune RTP setup with the Moates Demon, you will have a socketed ECU, usually with a USB port on the side. the demon is a credit card size board sat on the socket (other end to where you plug the loom in). You will also need the serial number for the software so you can register it yourself.
if its just a socketed ECU then treat it as such, I don't think dealer mapped neptune licenses are transferable (I may be wrong).