I recently learned how to export Blender models to Auran Trainz, and built my first Trainz model, of a generic (and semi-fictional) Phillips refrigerator box. This instructional video explains how to export Blender models to Trainz.

Blender is available here:

www.blender.org

The model exporter for Trainz is available here:

sourceforge.net/projects/blenderextrainz

Gimp, the image editor used in this video, is available here:

www.gimp.org