First welcome
Second I would read the rules - your topic title is a bit childish.
Third a Mac is just an over sized media player
If your game cannot play mods its probably because it's on version 1.0.
To be able to have mods (putting things in addon folder) you need official 1.1 version by Lucasarts.
I am unsure how to get that because I never played on a Mac.
The 1.1 version is just a swap of the 1 file "BattlefronII.exe" used to run the game.
Perhaps someone here can send you a 1.1 BattlefrontII.exe that does not involve running any more programs. You would just swap the 1.1 exe over your old one then you can play with mods.