Hi!
I made a normal mapper to generate DOT3 bump maps from a very very high polygon model and to put in a low polygon one, so you can simulate zillions of polygons in the low poly model.
Web is at http://www.santyesprogramadorynografista.net
Blog is in http://santyhammer.blogspot.com
As curiosity, uses the AGEIA PPU ( www.ageia.com ) to accelerate the calculations ( or software emulation if you dont have the card using your CPU ).
It supports tons of formats, including 3ds, obj, dotXSI, rhinoceros, OpenEXR, HDR, BMP, TGA, blah blah.
Pls, I need some testing if possible. thx!