I'm much of a noob at Blender myself. So it might take some looking at the file to see what's going on. (And what they usually do at other Blender forums, provided you can share the file.)

However, you don't need to do a whole lot to make a mesh hidden from the camera. The Blender camera has a clipping values you can adjust. Select the active camera and go through its properties. Anything outside the bounds of the inner and outer clipping distance is hidden. Great for seeing through walls or any other nearby object that can get in the way.

Not sure if that helps, but it's something to be aware of.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.