http://en.wikipedia.org/wiki/DirectX#Releases As you can see, DirectX 9.0 was only released in December 2002. http://en.wikipedia.org/wiki/Flight_Simulator_2002#Flight_Simulator_2002 Here you can read that FS2002 was released in October 2001. This means that Flight Simulator 2002 works with DirectX 8, that your Intel GPU probably supports a lot better. FS2002 is an excellent simulator and you can still find support for it in the forums of FlightSim.com.