Did this fractal demo actually work for you? On my machine, I get a blank Tk box but no image -- no error messages either. That's when either clicking on the program in Explorer or when doing Ctrl-F5 with the source open in a window. Any clues?

See what you mean. Its old code, probably incompatible somehow with newer PIL or TK. But to see the image, you can add self.im.save("mandel.gif") to 'def creatImagef', and pull up the gif. I changed w and h params to 800 to make the gif large enough to be interesting. ART