Empire Total War Preorder Special Forces Unit Unlock

Preorder / Special Forces unit unlock for Empire: Total War
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* What does it do?
Empire Total War unlocks some special units if you have a preordered or "Special forces" edition.
What you get here is a very simple mod that overrides the table indicating these special units.
The result is that you can recruit these units in the standard edition of the game.

The special units are listed here: http://blogs.sega.com/totalwar/2009/03/17/special-units-guide/

There are already several instructions available online on how to achieve this effect by unpacking or replacing "main.pack".
The advantage of this mod is that it doesnt modify any game files, so it should work with any version of the game,
and really shouldnt cause any problems at all (no promises though :)

Additionally, since this download does not contain any game files, it is hopefully legal to distribute.

My apologies if a similar mod already exists (i am sure it does), but i couldnt find it.

It should be noted that i just read the instructions of a website and then used http://sourceforge.net/projects/etw-mod-tools/
to create the pack file. If you want to do it yourself, you can use the above mentioned program. The file you want to override is
db\units_to_special_editions_juncs_tables\units_to_special_editions_juncs.

* Automatic install:
Simply run the included install.bat file. It will do two things:
1. Copy unit_unlock.pack to the location of the data folder of ETW ( assumed to be %ProgramFiles%\Steam\SteamApps\common\empire total war\data\ )
2. Add the line "mod unit_unlock.pack" to %AppData%\The Creative Assembly\Empire\scripts\user.empire_script.txt creating it if it doesnt exist.

* Manual install:
Do the above two things manually :)
(If you cant find the folder for 2. do a search for preferences.empire_script.txt which should already be located in that folder)