Warning: this is a very specific task, if you do not know about shaders and Unity 3D v3, please do not bid, as this shader is very complex and need a good specialist.
I have an atmospheric scattering shader same as this one: [url removed, login to view]
And I try to make it work on Unity 3.x. I have it working perfect on Unity 2.x but with the version 3 and the new surface shaders, something is broken and it seems that it will take me too much of my time trying to figure out what is wrong.
I will provide the shader already adapted to unityv3, but I still have compile errors.
If you are doing a good job on this one, I will provide more jobs of this kind.