There is no file, there is a folder where to move the mod files inside
here an excerpt from the readme:
/ -------------------------------------------------- -------------------------
Install
=====
...bluber ...
1 Extract the files to a temporary location.
2 Copy the meshes and textures folders to your
<install directory> / Fallout3/Data / folder
3 Enjoy
...Blubber ...
/--------------------------------------------- ---------------------------
it is of course the Data folder, but since there is no folder drinne meshes or textures . Darfur, there exist Fallout - Meshes.bsa and Fallout - Textures.bsa. copy
Just have used nothing.
I am strongly of the I extract the *. bsa, play mod files in, and re-packaging.