Rendering normal Texture use current object
1. install - copy ScreenNormal.ms to maxroot_ScriptsStartup
2. use - material editor find screen normal material
3. uninstall - delete ScreenNormal.ms
you can use this shader in 3d Max material editor (it works max 2008 or above version maybe i make this in 2010ver)
make any 3d model and applay material (you can add addtional bump image)
and press [Set Backgroud Color to Flat Normal button]
it'll make background color to (128,128,255)
after reder scene...and Save image and paste your own normal texture image
you can use this shader like zbrush's normal shader
p.s. sorry for my foor english :)