After much struggling, I managed to get a working PyQt build environment set up on OS X by using information I discovered in several of the tutorials.

This module introduces how to develop Graphical User Interfaces (GUI) by ‘dragging and dropping’ various application parts in Python. Specifically, to accomplish this task a program called PyQt will ...

So I'm using the latest PyQt (which uses Qt 4.6) to create a program that blah blah and has a dock with a file browser. I have the file browser working fine, displaying My Computer as the root ...