Install Paeninsula Italica v0.95 and the Patch II. Then download this, open "[Submods] - RS2 environment.rar", then "Multi_Mod_Environment.zip" and extract "BI" and "data" folder into your "Rome Total War" directory. Careful, I suspect this will affect the main game and if so other mods if you have them installed.
Good upload, thanks for the effort. I have to ask, before trying to apply, I have dozens of modfoldered mods in my RTW/BI folder, is it absolutely necessary to copy the files directly to my RTW folder and not the Pen Italica folder? (I've seen other mods use files in their own modfolder data/bi and files seemed to work). I'm not willing to risk my current BI install and the files are too many to backup manually. Thanks in advance
EDIT: Tried to install it 'my way' into the mod folder after backing up my files, game crashes at startup loadscreen :( Guess this pack really has to be installed in the main RTW/BI folder, which I'm not going to risk. I don't mind playing PI without it.