1. Click windows start button at the lower left hand side of the screen (or press the keyboard key with the Windows logo on it to bring up the menu). Select Computer option as shown below.
2. Scroll up to the top of the window if necessary and select Favorites--> Flight Simulator Addons
3. Scroll down the list to NavUpdate.exe and run the program.
Tip: If you right click on the NavUpdate.exe you can create a short cut to the program that can be placed on your simulator desktop.