BZW Exporter for Wings3D
The BZW Exporter for Wings3D was written by trepan so that users of Wings3D could export their 3D models to BZFlag world files.
You can download the plugin here. To install, save the .tar.gz to your computer and simply hit File->Install Plugin. Then, select the .tar.gz file which you saved to your local machine. Do not expand the compressed file.
The BZW export plugin will work on any operating system that supports Wings3D version 0.99.53. The plugin has been updated March 22,2009. In the future it will be added to official Wings3D releases, and be pre-installed.