Thank Jack for the ViaCAD tip - and thanks Michael for support Iges import so nicely! Yes, the simple VC models I created came in nicely to MOI (lines, curves and all LOL) all ready for MOI export.

I wish there as a ViaCAD back in the mid/late 90's when I threw away good money on AutoDesk's "3D Concepts" - something they put out and never further supported (booleans would look good in the design window but wouldn't export out; your holes would be totally missing!)

-Will