About Exporting Designs to DXF and DWG Files
You can export design data to AutoCAD 2007 and earlier as DXF or DWG files. The default export format is AutoCAD 2007. AutoCAD 2008 and 2009 use the same DXF and DWG file formats as AutoCAD 2007.
Use the Export Environment for DXF or the Export Environment for DWG dialog box to select the design sheets and order of the sheets to export and to change the default layer and line font mapping.