Figured I'd bump this up from its watery grave instead of starting a new thread. It's been more than 7 years since the previous postings on this thread, and BVE / openBVE has developed exponentially. There are some great American routes for download, like the Desert Freight / Passenger route, The Rocky mountains route, Seneca - Fairlands, Seneca - Monet, and Blueridge (All of which you can find here:
http://www.bve.cz/en/route_table_usa_canada.html) .
In addition, the rolling stock for those routes has also improved greatly, and you can find examples here:
http://wwwlocomotivaopenbve.blogspot.com/ (many heavy haul class 1 freight locomotives)
And here:
http://www.mediafire.com/openbve <-- this is slightly complicated, because in order to get all objects to display, you must not only download the train file, but you must download the appliance folder and place it in the specific train folder you want the objects to display in. However, if you figure it out, the rolling stock is amazing.
Here are some video examples of today's OpenBVE quality. I will link my playlist on youtube, which contains most of the stock mentioned above, and some foreign stock. Many of my own trains I have modified sound and physics wise to make more realistic, but visually speaking, what you see in those videos is what you download. Enjoy my friends =)
http://www.youtube.com/playlist?list=PL9C10AA748CB0FBCF
In order to download the latest version of OpenBVE, go here:
http://www.openbve.org/