How to couple pyunit with GUI?

[volcano]

I am desperately looking for an info how to combine a testing
application with decent GUI interface - the way most xUnits do. I
believe I have seen something about using Tkinter, but I do not
remember - where.
I am working on a complex testing application built over unittest
module, and I need GUI interface that will alllow me to select tests at
different levels of test hierarchy tree.
I am new to python, so say everything slow and repeat it twice:)