Auran Trainz 2006 without being an Administrator

It's not hard. As an admin:

1. Install in the normal way. Get it working with the graphics settings etc. DirectX 9 works for me, and OpenGL doesn't.
2. Run these commands as an admin:

   
   C:
   cd \Program Files\Auran
   cacls * /T /G Users:F
   

3. Run Regedit and navigate to HKLM\Software\Auran. Right-click on Auran and select Permissions.
4. Select Users and check the box marked full control

Done! Any user can run and save settings.