I just did up a mirror for and example of the Cube_Ambience.fx shader.
Attached are the files. .obj if you want to make your own textures, All the Game Guru files to place in the map.
Free to use for commercial and private use.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 8gb RAM, Nvidia gtx660, Windows 7 Pro 64bit, Screen resolution 1680 x 1050.