Animating top half and bottom half of model seperatly? how?

I have a walk run and shooting animation for my character. I was wondering how I would show my shooting animation from the waist up and still show the running or walking animation from the waist down. Any Ideas?

your looking for this: file:///Applications/Unity/Unity.app/Contents/Documentation/Documentation/ScriptReference/ AnimationState.AddMixingTransform.html

I asked this same question here