Use the migration assistant available from Autodesk. It will convert all DWG files to and from R13 through R2002. You can download migration assistant from Autodesk at: ftp://adeskftp.autodesk.com/prodsupp/autocad/patches/migrsetup.exe It does require that A2k be installed. Read the information available at: ftp://adeskftp.autodesk.com/prodsupp/autocad/patches/AMA-readme.htm