You might want to try changing your screan size to lower the resolution of the display. The program you are using is FMS (I believe) and does not have what anyone would consider great graphics, but should be able to be stretched to full screen and has gotten many started including me.

Just for fun you could also try Clearview using their free 30 day trial software ($40 to purchase) and see if this works better for you in the long run although you would be only able to use four channels as the radio you get with the Esky kit only has four.

Otherwise look at spending about $200 for the really good stuff (FSOne, RF 3.5 or Phoenix) if your computer has the video horsepower to run it well.