JTB Word's DWG Columns for Explorer has been updated to version 2.3. If you already have version 2.2 installed and it’s working fine there is no need to upgrade as this version only have improved the installation process to be more stable. There are now also 3 versions of DWG Columns. One fully functional version that can be purchased, one trial and one freeware.
If you want to see the DWG and DXF properties and metadata in Explorer columns please give the trial a try. No need to have AutoCAD or other CAD programs installed for this to work. After the trial has expired you can still use it to show the DWG version information as long as you like.