you copy over some original files within the data folder.
This all the mods you require..and where you copy them too.
zulu maps copy into C:\Program Files (x86)\Steam\SteamApps\common\napoleon total war\data\campaign_maps
brit units copy into C:\Program Files (x86)\Steam\SteamApps\common\napoleon total war\data
khartum/zulu rorke's drift1.7gig copy into C:\Program Files (x86)\Steam\SteamApps\common\napoleon total war\data
modified deployment zones copy into C:\Program Files (x86)\Steam\SteamApps\common\napoleon total war\data
mynaploc copy into C:\Program Files (x86)\Steam\SteamApps\common\napoleon total war\data
to find and change the script see below....
Windows XP
C:\Documents and Settings\YOUR PROFILE NAME\Application Data\The Creative Assembly\Napoleon\scripts
Shortcut:
Start -> Run -> Type %appdata%
A window will open in the Application Data folder, simply follow the path above.
You may need to enable 'Hidden Files & Folders' in Windows XP and Vista:
-> My Computer
-> Tools
-> Folder Options
-> View
-> "Show Hidden Files and Folders"
Windows Vista / Windows 7
C:\users\YOUR PROFILE NAME\AppData\Roaming\The Creative Assembly\Napoleon\scripts
Shortcut:
Start -> Search -> Type %appdata%
A window will open in the AppData folder, simply follow the path above. I used the shortcut to find my script
Shortcut:
Start -> Search -> Type %appdata%