I have recently been playing Flight Sim 98, for a bit of nostalgia, running it in Windows 98 in the program VMware in my Windows 7 64 bit. However I recently bought the RAF 2000 payware Addon pack for FS98. And whilst most of the Aircraft work, I am having problems with a few a few of them. Two of those Aircraft that I am having problems with, are the Hawker Hart and Hind. I create a flight, and select the Plane and Airport, It loads all views are there including the instrument Panel. And the propellor is turning and I have the sound, however when I apply power even full power, with the brake off, the Sound remains the same and the plane remains stationary, I am not sure which other Aircraft that applys to, the throttle quadrant shows the lever going up. But the Aircraft doesn't move, no matter what power setting I use. Could anyone on this forum suggest to me what is causing the problem, and how I can fix it ? Any help and information from somebody, would be much appreciated.