triqui,
http://forum.shrapnelgames.com/showthread.php?t=47741 you can download it here, a lot of changes, a lot.
download the mod, unrar it, create a "mods" folder in dominions 3 directory, copy the "cbm 1.92" files in "mods" folder. In the game go to preferences, mod preferences and enable "cbm 1.92".