Okay, I got your file called up and I'm looking at it.
First off, you have the clipping still set at 500, so if you get only 500 blend units (500 feet away) things will grey out.
We told you, go into the 3D window (the one with the rock and camera), click on View, and then View properties.
A little box will pop up. Change "Clip End" to 10000.
Okay, another strange thing. You have your camera in layer 1, but all your objects in layer 2.
Uhm......shouldn't your objects be in layer 1?
Okay, I just moved them all to layer 1, but I'm still not seeing anything through your camera either. Let me look some more. Gotta take the dog out right now.