thanks twindaddy_1, that makes sense. I was trying to be cheap. I want it working long enough to teach my kids how to fly without damaging too much hardware, AeroChopper would suffice I think. I'd like to get the Realflight G2, but don't see it happening for several months until we recover from Christmas.

I do have my old PC. I know Aerochopper was working when it was running Win95, but not sure if I ever tried it after I went to Win98 on that PC.

I'll also look into a DOS bootable disk to see if that works on our new PC with XP (Skitchen8 mentions this), but I don't want to screw anything up.

Question on Realflight G2. Does anyone know if Realflight G2 Lite is good enough, or is full blown version worth it? Looks like you can upgrade later from Lite to Full, but through away about $20 in the process. Thanks again!