Blender (2.56) Model Simple Man - Part 5

This short video shows me explaining how to name the different bones in an armature. I then link the mesh of the body to the bones in the armature. This will allow me to animate the figure in the next video.
Complete series can be watched here-
www.deadlygeek.com/flash-labs/...

[@ghanmy]

When I tried to rotate the arm the torso move rotate with it. How do you stop the torso from rotating?