Hello all.  I was wondering if someone can show me how to use the Mod folder.  I want to replace a few of the races with a custom race included with their own backstory and pictures.  Same thing for the minor races as well.  What files should I be looking at?  Also, i would prefer to use the mod folder so I can always turn the option off and play the regular game.  Anyone know what files goes in what folder in there?
Oh, and is there a way to replace say the standard battleship with a custom ship i made through the ship builder?  So in that case, when I create my custom races, they would use the custom ships.