How do I create a package that contains pictures that copy themselves directly to the "Backgrounds" folder?
Backgrounds are stored in
There is a packaging guide on: https://wiki.ubuntu.com/PackagingGuide/Basic
You might want to take a look at other artwork packages.
To do so, use apt-get source PACKAGE
Then it should show you how it puts the backgrounds into the backgrounds folder.
For example: apt-get source blubuntu-look
You will need dpkg-dev installed, but this should hopefully provide you with enough information to get a wallpaper package built.