DWG Converters,PDF to DWG, DWG to PDF, DWG Viewer - AutoDWG
Computers, CAD and CAM, AutoCAD, Applications - AutoDWG Software. Converters between DWG, PDF DXF, DWF, and several image file formats, and AutoDWG Attribute Extractor to retreive block information, all as standalone programs.
http://www.autodwg.com/