Are there any AutoCAD products that would allow me to command line request the conversion of AutoCAD 2005 (or previous) to AutoCAD V12 DXF or DWG. I will stand the loss of geometry that may result. I want to watch a folder into which users will place any version AutoCAD files, these would then be converted to V12 DXF or DWG. I can program VB.NET or VB6 to handle the execution. I need to get drawings across to a legacy CAD system that will for a number of reasons only accept V12 AutoCAD data. I have seen a third party convertor (DWGDXFConvertor) but would prefer an Autodesk product to ensure that we stay current on new releases. Any advice? P.S. I am not a 2005 AutoCAD user, we do have the software. I use inventor as my core CAD product. Cheers in advance. Phil.