yes/no dialog

[Manfred Lotz <manfred lotz arcor de>]

Hi there,
It happens that I accidentally click the Quit item on the main menu.
Therefore I like to  change that item by adding a dialog which displays:
Do you really want to quit Sawfish? and offering a Yes/No choice.

Could anybody tell me how I can create such a dialog?

Thanks.

-- 
Manfred