I purchased Real FlightG3.5. I have a controller that came with 3.5. I would like to get 4.5 also. But I do not need another controller. Is there any way to get 4.5 without the controller. I downloaded 4.5 from GP's web site but it will not load. It comes up with a message saying something to the effect of "Administator will not allow, yada yada." I'm willing to pay for the software. I'm just not willing to pay for another controller. Any thoughts on this. I E-mailed GP and got no response so far. Thanks in advance for any help.

Mark Shuman