Pin to desktop

Hello everybody! I need some help.

Is there a way to pin a window to the desktop in Linux?

I have a list of tasks in Calc. And I want the window of Calc to be always before my eyes, so that it sort of reminds me of my tasks. The window must be �stuck� to the desktop, and when I click the Show Desktop Button (I use this button very often) the window shouldn't be minimized, but must always remain visible. The feature �Alway on Top� is definitely not what I want - I need the opposite, sort of �always on bottom�. The window must behave as if it were part of the desktop wallpaper. Is it possible in Linux?

By the way, I've tried different �sticky notes� applications - the �glue� is unfortunately too weak: when I press the Show Desktop Button all notes disappear from the desktop - they are just minimized The best solution would be to glue the window of Calc to the desktop.

I'm using the latest Ubuntu.

Thanks in advance!