Instructions
Start the flight simulator you want to edit the controls. By default, the game should boot to its main menu.
Click "Settings" or "Options" from the main menu. A further list of options with either be listed or in tabs.
Click "Controls" from the listed options. All of the game's controls will be displayed.
Click on the control you want to change. The box will become highlighted.
Press the key you want to change the button to. The action will then be assigned to the button you pressed. Repeat Steps 4 and 5 as necessary to completely customize your control scheme.