Under "Catalog" there is an option to import 3d models with an ".mbe" extension. What the heck is an .mbe file? What is used to create models with this extension? I understand that Sketchup can be used but no one explains how to do it and there is no .mbe extension there either under the export feature. And I am referring to just building models here, not engines or rolling stock. I am designing my first n-scale layout using Kato track and really like the results from your software. You have a great product here but the support for non-European users is poor even under the professional package, which I just bought. And translating all the forum information into English misses a lot of information. I look forward to your explanation of how to use Sketchup. Thanks, Mark