I created a "greenbox" map, to create the player model images I posted. It is a box with a green sky, and one side is a mirror. (You need to turn on reflections, to sharp or better to insane).
Maybe that could be of help too.
I uploaded it here:
http://rapidshare.com/files/135195988/greenbox.pk3
(24KB, TrafficShare)
BSP Name: greenbox.bsp