I used this guide to make it
http://forums.odforce.net/index.php?showtopic=3775&st=12&start=12 [forums.odforce.net]
using a Material createdeith this VEX

But the results are too smooth. This tutorial was to an older Houdini Version. I'm using 9.1. Have anything changed?
Is there another NormalMapping tutorial for houdini 9.0 o 9.1?