I've got a couple of rear view mirrors in my current project but unfortunately I haven't been able to get the mirrors to show much more than a moving pattern that turns into sky colour when the aircraft rolls.

If you want them to be functional it would be difficult using the Alpha channel and the window idea would work but I have no idea how you could set the window for 'back view'........

I'd be very surprised if Gmax can use the flat mirror process that's used in 3dsMax. You don't see the effect until an image is rendered, and Gmax has no rendering tool. I just checked - flat mirror is a special kind of material in Max - and it's not available in the Gmax material editor.

When I was at Eidos, working on Flying Nightmares II, I asked the lead programmer how hard would it be to do mirrors, since the Harrier has a lot of them. He said it would cut the frame rate in half because it would require the engine to draw the environment twice for every frame, once for the regular view out the window, and once for the image in the mirror.  I know racing sims have car mirrors that work, but the world they deal with is pretty flat when compared to the world of flying.

OK guys, if the material and textures are not viable ( yet!) what about re-sizing a window to sit over the "mirror" in the 3D cockpit......
Any ideas/comments.
ken