Thanks for all the comments. I try to implement the shadows soon, but today I played around with physics in an old version of our level.
The values aren´t very good adjusted but at least I got newton to work
http://www.youtube.com/watch?v=nKAcyX6c8UE

Lite-C Tut. 1 Lite-C Tut. 2 Lite-C Tut. 3 (en)
Shader Tutorial (ger)

http://www.slindev.com