This may have been covered already in this thread, but I'll put it in again. A solidly working way of adding wallpapers to each of the 9 home screens is to add the wallpaper files to /home/user/.backgrounds and name them as background-1, background-2, etc. One for each screen. Whenever you set a wallpaper through other means, it seems to me that the file gets copied to this folder and named "background-[number]". I too saw the demonstration video of 9 home screens and vertical/diagonal swipes, yet ended up disappointed when I found out that it was a fake. Nevertheless, I made a set of 9 simple black background .pngs, each with a small grid on the top right corner indicating which screen of the 3x3 you are in, mainly to provide an idea on which way to swipe to get to where you are going to. It's not that useful now, but I'll keep dreaming :> The top right corner of home screens isn't used by anything, right? Even widgets can't be put there? http://dl.dropbox.com/u/4352287/grid.zip