How best to utilize the Site Map feature of gINT v8i?

Hello, 

My geotech company just purchased the latest version of gINT professional, and I'd like to utilize the site maps feature but there are only a few file formats that it can import and I'm not sure what will actually work.  I tried outputting a dxf from my GIS software, but gINT apparently only supports DXF 12 or older, so I can't get that to work.  I even tried various file conversions, but can't figure out any way to utilize this feature with the file types it accepts.  

If there were a way to go from google earth KMZ/KML to gint, I'd love that, since that's how my staff usually coordinates our field work and boring locations.  Is there any readily available topographic data that gINT will import?  Really just looking for anything as a basemap.  We usually don't have CAD files of our site plans, because most of the time we're brought in at a very early stage of the project.