Just installed Topo USA version 5 ..
looks a little better than version 4 and has " car / nightime " colors and some other functions added, like the ability to print.
unfortunately the 3D screen still flickers when embedded....
maybe I'll just embed Ver 4.0 and keep in 2D mode, and run Ver 5.0 as a standalone with 3D and switch between ala alt-Tab ????
The 3D is too cool !!!!