True, overrideredirect will remove the decorations; however, you lose functionality also.

From Wm.pod

Setting the override-redirect flag for a window causes it to be ignored by the window manager; among other things, this means that the window will not be reparented from the root window into a decorative frame and the user will not be able to manipulate the window using the normal window manager mechanisms.

One main limitation I have experienced with this is the inability to bind actions. As converter said, your mileage may vary but I don't think overrideredirect is the solution. I have mainly limited my use of the override-redirect to creating splash screens. If someone knows of a way to remove the decorations but still retain full Tk functionality, I would love to hear it.

Inelukii