The following info is how to unlock every faction on
Medieval war 2, 1 and even the kingdoms exspansion and
also the rome total war package.

1. go to my computer
2. select the Hp under hardrive disks. am did this on
   vista so i may be different on other computers.
3. select program files
4. Medieval total war 1,2,kingdoms
   select sega
   Rome total war 1,BA,Alexander
   Select creative asslemby
5. then select the data file. for expansions u will need
   to select there file. however the kingdoms expansion
   u will to go into mods then select one of the four
   kingdoms then data.
6. then select the following world, maps campaign,
   imperial campaign.
7. now drag the descr_stat file out and on to ur 
   desktop.
8. now open it and copy and paste it into notepad.
9. then cut and paste all the unlock factions into
   playable. u can do it with some of the non-playable
   but be warned the game can crash so i can't be held
   responable for any problems u encounter.
10.save as the same title descr_stat and then drag it to 
   where u found the first one.
11.there u go all faction unlocked. k word to the wise 
   first time loading my take a bit longer but it will 
   work.