Alright this is the first time I've attempted to model and rig a character ever and I'm having a few issues.

First, modeling from a single polygon wasn't working out so well so I made individual parts using NURBS, revolving them, merging them and then converting to poly, which seemed to be fine.

Now, when I try to make the skeleton, binding it hasn't been working. For example when I try to rotate the arms, it'll pull the vertexes of the hip with it.
Is there an easy way to fix this?