11.1 with KDE 4.1

For the life of me, I can't figure out how to set different wallpaper on
each desktop. Can anyone fill me in?

--
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on Usenet and in email?

..snork