(Contact made by email) - For general information:
Just to check first, are your secondary displays communicating correctly with your main PC? You should see a display without any controls, but where the 3d view duplicates the main screen, with a your ship and the other vessels moving identically.
If this is working, this is a good first step. Let me know if this isn't working.
To get your secondary screens displaying a 360 view, you will need to set the view_angle in all the bc4.ini files to 60. To set the viewing angle, you can do this manually with the arrow keys, or set the look_angle to 0, 60, 120 etc for each computer.
Let me know your progress, and I'll try to help as much as I can.