I just tried your dinosaur shader sample and simply swapped over the box only and ran it. The normal texture was sharpened (ie darker black lines) but the normal mapping (ie 3d effect) was lost...
Viewing post in Light Shader v4.1 comments
The Dino example and all the other examples, in that zip, uses old version of the shaders, There is a normal Depth parameter in the newer version, you can use that to give more depth to the object, by setting it from 0 to 1, 0 means more depth, 1 means flat texture. Give it a try and let me know if that doesn't help, Normal mapping does work, but the only issue I found is that the default normal maps react to light a bit and mine doesn't.