Buttons on G700 are programmable,
so please set these buttons as standard keys from keyboard or mouse, such as j,k,l or Num1,Num2,Num3 etc
by Logitech Gaming Software, which can be downloaded from Logitech's website.
Then them can be mapped in Cross Hair Manager.
As for buttons on SONY Nav,
they can be mapped in the way showed in this video:
ReaSnow Cross Hair Mapping buttons in game
http://youtu.be/aP_9wE4EWBg