artie, The Displays.prefPane icon when received by email is the Desktop & Screen Saver. Why it has a different name in the Pref panes I don't know. In your Snow leopard prefPanes, is it different to mine? jaybass
I booted into my Snowy partition and emailed /Volumes/HDz/System/Library/PreferencePanes/DesktopScreenEffectsPref.prefPane to myself, and I received
this, with the icon correctly labeled DesktopScreenEffectsPref.prefPane. (Clicking on the image enlarges it.)
The icon in the email is the light switch you described, and when I dragged it to my desktop it resolved into the correct icon...DesktopScreenEffectsPref.prefPane.
I dunno...
Edit: I've also got /Volumes/HDz/System/Library/PreferencePanes/Displays.prefPane...entirely different animal.