import and export model with cga

[zizicocata]

hi 

i am beginner

 have a few questions to ask

I use the cad program


  
1.c://pro/city.dxf

With cga I want to import file number 1



2. c://pto/cityfinal.fbx

then after work
the selected object
I want to have the result like number 2 in cga

I would like to know how to do this with cga