Here are some models converted using SketchUp and the ZbylsXExporter plugin for Google's SketchUp. You can see what they look like using mview.
I've also added a ruby script I modified called BatchXExporter (copy to Google SketchUp plugins folder) which can convert a directory of models. Open the file in a text editor and change the "Output_path" value to the folder containing the skp files (don't forget to have a '/' character at the end of the path)
Amiga CD32
Atari 2600
Coleco Vision
Com