convert - Transforming from DWG/DXF to GIS?

I've got tons of DWG/DXF files with information (in several layers) dealing with:

• Contour lines and elevation (lines)


• positions of antennas (points)



• protection areas (polygons)


• administrative boundaries (lines)


• roads (lines)


• rivers (lines)


• fences (lines)


• ...

All this information have been inserted into these CAD files in a non-standard way (not-unified names or colors in layers), and now I want to translate it into GIS (SHP files or into a PostGIS Server).

I'm investigating how to translate these data.

I'm considering:

Can CAD2GIS translation be achieved with this software?