https://i.ytimg.com/vi/PDLZRRGxvAs/hqdefault.jpg
in this tutorial we use rigify to rigging in blender 2.71,rigify only works with biped models.
http://urtuts.blogspot.com
model used in this tutorial thanks to racche www.blendswap.com/blends/view/72395
source
Link to this post!