There's an old tiger moth located here. http://www.knifeedge.com/forums/down...o=file&id=6216
. Download it to a location you can find, like your desktop. Open RealFlight, and under the Simulation column, select Import. Select .rfx/g3x as the type, and navigate to your file.
All the files in the swap pages are free. EA files are standalone. They require nothing else. CS and AV files require another file, as noted on their pages.