[TheTROLL]

Open the Quick Launch toolbar folder, usually at c:\documents and settings\USERNAME\application data\microsoft\internet explorer\quick launch - or right-click on the toolbar (not on one of its buttons) and choose Open

File/New/Text Document

Double click your new file top open in Notepad and enter this text exactly:

[Shell]
Command=2
IconFile=explorer.exe,3
[Taskbar]
Command=ToggleDesktop


Save and close the file.

Rename the file to "Show Desktop.scf" and all should be back to normal.