3D Model (DWG/DXF) Import
This is a Pro only feature.
SketchUp allows you to import 3D models, such as DWG and DXF CAD files, for placement within your model. Import a file using the Import menu item in the File menu.
Note: SketchUp is a member of the OpenDWG Alliance, allowing SketchUp to offer the most reliable DWG file translation available.