Hide a window manually or automatically, with WinHideSB
WinHide.SB is a free program that will let you control the visibility of a windows – hide or unhide it even from the system tray.
When “Hide an active window” is on, an “anti-boss” key is added to the window that is active at the moment.
WinHide.SB can also permanently hide windows – automatically hide windows that you choose, the moment they appear.
The developer’s English is not very good, the interface is ugly, and the program difficult to use. It won’t work at all on Windows 7.