I tried but nothing happened, I still do not see the green hud, not really happening, because I install the program normally and even I can not use weapons that not even the default one aircraft armed for fsx (LX-45) .....
 I suppose to use the 2d hud only need to install the program and do any manual modification, not being me skipping this step.

1) install the cs weapons
2) loading the plane you want
3) fly, enabling the panels (SHIFT + number)

always talking about the 2d cockpit.
I know that for the 3d coackpit manual changes are necessary.

thanks