i already answered in the other thread. i worked on a project which uses three monitors with a parhelia. you just have to set the right full screen resolution with video_set. the video driver handles the rest. networking probably won't lead to good results because of lag.
you can connect three views/cameras with ang_add like in this example:
Code:
// camera_left + camera_right + camera should have the same settings (fov,...) and you have to set their pos_x correctly
while(1)
{
vec_set(camera_left.x, camera.x);
vec_set(camera_right.x, camera.x);
vec_set(camera_left.pan, vector(fov, 0, 0));
vec_set(camera_right.pan, vector(-fov, 0, 0));
ang_add(camera_left.pan, camera.pan); // uses quaternion rotation
ang_add(camera_right.pan, camera.pan);
wait(1);
}