its a lot easier to know what bone was intended for what group if you change the boine name to one that has a bit of relevancey, specially if your using a lot of bones. plus to use bone 1 bone 2 etc in the hierachy you have to name the groups bone 1 bone 2 etc as the bones have to correspond to the group (i think) i could be wrong and hopefully if i am someone will correct me

billy