armature problem

i have a simple model with armature they all move the model how i want except for the legs, the legs for some reason move the armature away from the other armature pieses like i was moving a object, but the other armatures when i turn them stay to gether and just rotate not move the armature i do not get how to make itt work properly

heres the map i need thhe thing fixed the unit is the little cube person not the square.

hmm isnt letting me do the attattchment thing >.<if know prob ne ways please reply

i use this map just to experiement and test how to get things working,