Like many of you I have upgraded my computer and am attempting to make my Real Flight Classic work (it is a great program). My Real Flight came with the 25 pin to parallel printer port transmitter interface. My new laptop only has the USB ports. Does anyone know if there is an adapter for the interface I have that will plug into USB or an interface compatible with the Futaba radio buddy box connection which plugs into the USB port? I tried a USB interface cable for the Freeware FMS, but it does not work with Real Flight. Any help would be appreciated, thanks!