Oh, it's that easy. Thanks.
By the way, I have never really understood the installation instructions, they don't work for me. If I put the files in the folder
...My Documents\My Games\Beyond the Sword\CustomAssets\xml\text then nothing happens. To get this to work I have to put them in the folder
...C:\Program Files\Firaxis Games\Sid Meier's Civilization 4\Assets\XML\Text