DevConv
DevConv can convert files among DXF-DWG-DXB formats, taking care of the preferred version. Managed version from R9 to R2007 This is a stand-alone utility, AutoCAD is NOT required Easy to use interface, but also command line available to run it in silent mode. It`s FREEWARE!
Publisher : http://www.devcad.com
Download : here
