My guess is that once you downloaded the update, you did not 'run' it. In the folder you downloaded the file to, double-click the 'update.exe' application. This will apply the update, and will give you version 6.02 of Terrain Navigator, which includes support for the Vista GPS.
If you have trouble with this, CD copies of the update can be ordered by calling 888-839-5551.
Sincerely,
-Ed Lecuyer
Manager, Quality Assurance and Technical Support
