Quote - > Quote -   You say that we can't add anything..... The scene needs an environment to render properly.....   ???????????????

An environement? The model provides the "Mad Scientist" lab, complete with table, books, rats etc. and it's enclosed inside a "room" (a cube). Thag should provide the whole environment. Unless I'm misreading you :)

The challenge for this is to work on lighting, camera, and materials. It should provide a lot of opportunities. 

Hope this helps.

You are correct... It is enclosed. I was concentrating on the lab so close that I did not realize it was enclosed..   My bad......