AutoCAD Civil 3D

[#1]

How do I open a 3DM file?

I do not have that option in INSERT/ IMPORT or MAPIMPORT.

I suppose it is a rhino file.

Thanks!

[#2]

i don't believe you can

you have to export from rhino to file that civil 3d can read

[#3]

in autocad you can open it

in civl 3d and civil 3d as autocad you can't