Here is the link to the maya software render normal map shader, I believe you have to install his toolbox or something http://www.carboneros.com/mel.htm Here is the link to the mentalray render normal map shader, it is simply a shader network import into your scene and render in Mentalray…
Daz, since you work at EA I believe there is a better in house tool for generating these, Maybe ask Cody what he used, I think Mo wrote the tool? Also if anyone is interested I found normal map shaders for Maya software and Mentalray that let you do renders and display the normal maps correctly, I can see if I can dig up…