Make sure to click the flag again before you start the loco the first time. If not, you will not be able to move the train. Here are the controls: Left and right arrow keys..... MOVE L.......................................... LIGHTS H......................................... HORN B......................................... BELL N......................................... DIFFERENT LOCOMOTIVE Spacebar............................ BRAKE Keep reading! When you press N, simply type in one of these locomotives exactly: SD40-2 SD70ACE F3A C44-9W CW40-8 (More are coming soon!) When you press L, type in the locomotive type then type the lighting you want (frontrear, front, rear, none). For example: SD40-2 front P.S. for the F3A, it only has 2 light settings, none and front, because it only has lights on the front, dummy. ;)