I looked up cheats for Simcity 3000 and the cheats didn't work on your game so why won't they work?

Have you do this: Cheat Codes While in the simulator, press [Ctrl] + [Alt] + [Shift] + C to display a prompt box with a flashing cursor in the top left corner of the screen. Then, type one of the following codes and press [Enter] to activate the corresponding cheat function: