No, it needs to be shaded blocks. What's the error it comes up with? Is your actual texture you're trying to assign the shader to in a wad file or folder (should be in a wad) and the normal map and a copy of your main texture + env_map located in your main project folder?

Could you post a copy of the code you've got based around the shader if it is still unresolved by the above solutions

I might post a demo on Planet Acknex which'll help you and others to use it if you want.

Regards,

Matt Coles