"Yesterday at about 10:43am (PST), teddybergsman posted a thread in the Pimping & Previews forum that caused quite a stir and also caused a lot of jaws to drop. With his first post, he became an instant legend in the Polycount community by sharing his normal mapping toolkit called nDo.nDo tutorial by Philip Klevestav
nDo has a wide variety of normal map creation features, which gives the user great control to create quality normal maps all within Photoshop in a simple and easy to use script."
Polycount - nDo Normal Map Creation Toolkit
nDo Download and Installation Instructions