Here is a cab I made using HDwalls with a bg I selected to confirm it works great for the imagio.
http://www.4shared.com/file/15163102...Wallpaper.html
If you want to change the bg you'll need to download HDwalls and follow the steps provided a few pages back in this thread. Thanks to the original poster!
This will give you bg in all tabs. Just run the cab and soft reset.