guys I've downloaded the demo version of G5 and it can be operated with the keyboard!
there are 3 Helis and 4 Planes!

get it here :  http://www.realflight.com/new/free-g5-demo.html

Dorwin.

NB: this is a official real flight site, no piracy here!

  all version upto RF G4.5 work fine with any cheap Sim USB Tx or your own Tx using sim cable.

Not the official versions, I believe. Those are the ones that have been modified by people to suppress some of the anti-piracy checks.