Floating background images

Hey guys,
I have made several attempts to find this solution but no luck so far. For a simple flash game, I am wanting to float my 3D background images in the opposite direction as my cursor moves (to a limited range of course).

A good example of this is used for the free flash game "Pierre-dAnamara" which can be found here flashrolls.com/adventure-games/Pierre-dAnamara.htm

I just started using 3D Flash and am really impressed so, I hope to develop my idea with it. Any help is appreciated.

Narcees