OK, here's what happened; those boxes appear when you set up IKs across joints that have limits on their rotation. If you set up an IK joint then set a limit on the rotation of the top joint, the box will appear. That's it!
I set max and min limits on all of the joints so that the model could not be posed in an un-natural way and also to avoid collisions between the finger tip and the palm, the lower lip and the upper lip, and things like that. Now all I have to do is "un-check" the limits and the boxes will disappear, thus leaving a cleaner working area if you're still working on the rigging.
Thanks for the help, InvaZimm.
Last edited by Velusion; 12-01-2005 at 12:02 AM.