Download the whistle patch for the Big Boy here.

For all install and operational problems, contact:

NALW Technical Support

For website issues or problems, contact:



Q: Where can I get NALW's produc ts?
A: All NALW's releases are available at

Q. I installed the package, but I can't see the train(s) in the consist editor. Why?
A. The most common reason for this is the directory where you installed the package is incorrect. If you have your MSTS installation somewhere other than C:\Program Files\Microsoft Games\Train Simulator, you have to put in your own location when the installer displays the install directory.

Q: I just installed the GG1 Megapak and now I'm getting errors when loading. What do I do?
A: There is a problem with the installer that put a bad file in the consist folder. Here's what you do:
1) Go into the CONSISTS folder. If you installed MSTS with the default settings, this will be:
    My Computer -> Your main drive (usually C:) -> Program Files -> Microsoft Games -> Train Simulator -> TRAINS -> CONSISTS
2) Delete the file VIALRCTalgo.con.


All release dates subject to change without notice.

© 2002 North American Locomotive Works. All rights reserved.