If youd like to have different Wallpapers for each Desktop:
Download
https://github.com/downloads/vajrasky/wallpapoz/wallpapoz-0.6.1.tar.bz2
mkdir wallpapoz
cd wallpapoz
tar -xvjf ../wallpapoz-0.6.1.tar.bz2
Now we want to do it with „checkinstall“ so we are able to delete it later.
sudo checkinstall –fstrans=no ./setup.py install
So we created „wallpapoz_0.6.1-1_i386.deb“ and it´s already installed.