I have Real Flight Basic and have tried to copy the software on to a USB drive then install on another PC that doesn't have a CD drive. I couldn't get that to work. I have since upgraded to FrSky wireless simulator and RF8 that works pretty sweet. You can program your radio with things like different rates, import/swap models and fly multiplayer. Real Flight Basic work fine for learning or keeping skills up. If you are interested in buying the RFB software I'd sell it for cheap.