If you have a second, I'd really appreciate your help with figuring out where Tkinter is available: inside the TeraGrid, on your personal machines, on other supercomputing centers, etc etc. This form:
will collect your responses, and it describes what to do. You simply have to run the command: "python2.6 -c 'import Tkinter' " and report if it throws an ImportError or if it passes without failure.
Thanks very much, and I really appreciate you taking the couple moments to do this.