The good news is that the order are an easy one to get working, though there is a problem with the ids_name being hardcoded as to not give random missions or appear in the rep screen.
The bad news is this has been covered a couple of times (sorry), so your going to need to go through the tutorials (there's a separate tutorials forum).
As an overview:
1. Add entries to faction_prop.ini
2. Add entries to npc_ships.ini
3. Add loadouts to loadouts.ini
4. Add encounters (or modify old) system files

If you have a go but run into problems then feel free to post them up and i'm sure one of us will help you.

Some time ago I submitted a common.dll file modified to show the Order and Nomads on the rep list. It also contains the info you need to modify a version for yourself Search from main page for 'order on the rep list' or something like that

+++ out of cheese error - redo from start +++

Can you send me that common.dll file pls? ^^

The Order on the Reputation list Mod made by Anton