Minimise Everything . XP and Vista
To minimise everything and get back to the desktop, simply hold the Windows Key down and press the D key at the same time.
This can also be done by enabling the Quick Launch and then clicking the Show Desktop option..
This works for XP all versions, and Vista all versions.
Lost your Minimise Icon? Then this is how to create it again:
Open notepad and type the following,
Save the file as "show desktop.scf" to your quicklaunch bar by saving into this location:
Launch (change user to your login name)
Minimise Everything XP and Vista