Hi Jonah, the problem with that method is that will result in SketchUp's n-gons being diced into triangles.

I think I remember there was another option specifically for SketchUp....

Here it is: http://en.wiki.mcneel.com/default.aspx/McNeel/ThreedWareHouse.html - that updated SketchUp importer for Rhino seems to have an additional "SketchUpImportOptions" command you can run to turn on the "TrimmedPlane" option, which sounds like it will bring in SketchUp n-gons as trimmed NURBS planes.

So that is probably the best way right now to convert SketchUp files into a .3dm file.

It still probably won't be great if you have "smooth" parts in SketchUp, but it would probably work for bringing stuff made of planes over.

- Michael