Its an option when you 1st start the game so you can do 2 things to enable them, well 3 really 1) Duh!!! enable them when you begin game, one of many options under a custom game. 2) You could count down the options, i.e. its option 15 in list, go to the Civ 4 ini file open with a text editor, count through the options to number 15, the 15th 1 or 0, and change it from 0 to a 1 3) Just start a new game. Remember, its under CUSTOM GAME, not start now.