I just made my own bar for the bottom (not the desktop or quick launch). I put the folder that it references in Program Files, then made a text file with the following lines:
[Shell]
Command=2
IconFile=explorer.exe,3
[Taskbar]
Command=ToggleDesktop
Then save the file, and call it ShowDesktop.SCF
ya gotta have the .SCF part and not .txt or .bat for it to work (or so I read somewhere). You can also put a shortcut to this on the desktop or in the top area of the start button (I think that one will also work) then make a keyboard hotkey for it by r-clicking it and going to properties. Then make a strokeit that runs the hotkey. You probably could also just link to the file directly with the run command in strokeit.