Have a button to switch to Windows Shell without closing Aston

Have a button in the start menu or a hotkey that can switch from within the Aston Shell to the normal Windows shell and back without closing Aston.

This is very handy as if you find that you are familiar with the Windows start menu/desktop icons, you can have the beauty of Aston and all the features you are familiar in the default shell at the flick of a switch.

Closing down and re-opening Aston takes too long: having a button that 'minimizes' the shell would be great.