Rendering Glass Partitions

[bodangly]

Hello, I am looking for a bit of help in creating the proper materials to render a scene with a glass partition. What keeps happening is whatever is behind the glass is rendering as a flat shade, not as its true material. Is there a solution to this?

http://rapidshare.com/files/32544080...t_002.3dm.html

Thats my 3dm file. Any help is much appreciated!