I like this flight sim addon a lot - it works without any problems for me in ms flight sim on an old basic dell compter with windows xp but its a bit jerky only because the computer is too slow to play at the default settings for the bush pilot adventures - cant wait to. i have fs but it tell please insert fs disc 4, select ok and ee addons and downloads for Lockheed Martin Prepar3D, P3D, Microsoft Flight Simulator and Flight Sim series.