By adding the order, how much do you actually mean? You can get them flying in the game fairly easy. But, If you want to have them offering missions and having missions against them, you will need to create a new faction as the originals are hardcoded.

nah i just want them flying around

Its actually really easy to get them working, shouldn't take too long to get them all sorted. Heres some entries from FS:
[FactionProps
affiliation = fc_or_grp<--Actually mine was modified, but this is ok for you
legality = lawful<--i've made it lawful to get "patrol" instead of "raiders"
nickname_plurality = singular
msg_id_prefix = gcs_refer_faction_fc_or
jump_preference = jumphole
npc_ship = order_anubis2_d1-11<--All of these npcship entries are nicknames
npc_ship = order_anubis_d12-13<--and they refer to entries in npcships.ini
npc_ship = order_anubis3_d14-15<--you can call them anything, but they need to be unique
npc_ship = order_anubis4_d16-19a<--they can be used for several factions though
npc_ship = order_anubis4_d16-19b<--and can overlap to get a variation
npc_ship = order_anubis4_d16-19c<--These a-d entries have code weaps and are
npc_ship = order_anubis4_d16-19d<--the max level
..
formation_desig = 197808, 197820
formation = fighters, fighter_li_n<--If you add freighters, transports or capitals you need to add entries here

Ok, so we'll pick one:
npc_ship = order_anubis2_d1-11
open up npcships and add:
[NPCShipArch
nickname = order_anubis2_d1-11<--from faction_prop
loadout = order_anubis_loadout01<--in ships/loadout.ini for fighters/freighters
level = d11<--The number shown as level, maybe for generating random missions too
ship_archetype = or_elite<--Ship archetype from shiparch.ini
pilot = pilot_military_ace<--Millitary pilots are the most accurate
state_graph = FIGHTER
npc_class = lawful, class_fighter, d1, d2, d3, d4, d5, d6, d7, d8, d9, d10, d11
lawful is for vignette parameters
class_fighter is mentioned in ship_classes pointing to encounters
d1-d11 is the difficulty range in which the encounter will show.
In shiparch:
[Loadout
nickname = order_anubis_loadout01
archetype = or_elite
equip = ge_oe_engine_01
equip = npc_shield01_mark06, HpShield01
equip = infinite_power
equip = ge_s_scanner_02
equip = ge_s_tractor_01
equip = armor_scale_5
equip = ge_s_thruster_02, HpThruster01
equip = fc_or_gun01_mark01, HpWeapon01
..
equip = fc_or_gun01_mark02, HpWeapon06
equip = fc_or_turret01_mark02, HpTurret01
equip = cruise_disruptor01_mark01, HpTorpedo01
cargo = cruise_disruptor01_mark01_ammo, 5
equip = mine02_mark02, HpMine01
cargo = mine02_mark02_ammo, 20
equip = ge_s_cm_02, HpCM01
cargo = ge_s_cm_02_ammo, 20
equip = LargeWhiteSpecial, HpHeadlight
equip = SlowSmallYellow, HpRunningLight01
..
equip = DockingLightRedSmall, HpDockLight02
cargo = ge_s_battery_01, 12<--They only use these if you modify pilots_population (check the tutorial forum for that one)
cargo = ge_s_repair_01, 12
Well, thats about it for the faction side of things. Have you edited zones to get factions spawning before?

no i never did that before i am really new at modding all i ever did was systems with freelancer explorer.

i just got a big error i have to a fresh install forget about the order

What kind of big error? If you have entries in faction_prop that aren't in npcships it will fail to load halfway to the start up menu.

hey thanks alot you are really aa grat help i appreciate it all i can do is cut and paste all the info on a note book sheet and figure it out my self thanks for the help buddy i will keep trucken on . allot stuff you got to learn to start modding.

Glad u have got it sorted, let me know if you need any help at all.