I have SI Facegen version 3.5.3 build March 2011.
Making 3D renders from photos
I learned a nice tip that if you morph the actual photo's nose and nostrils to match SI Facegen's face texture, then paste a cutout of the photo's morphed nose onto the face texture, blur the edges of the cut out, make it translucent to fit over the face textures nose, then get rid of the translucence, then adjust color and tint and brightness of the cut out, the nose on the character can be spectacular. Check out some characters I made for the game Elder Scrolls 4, Oblivion.
I begin by cutting out a copy of the face textures nostrils and pasting next to the photo's nose to be used as a guide before morphing the shape of the photo's nose.