In simplistic terms Wallpaper Creator allows you to open up a photo/image file and convert it to a wallpaper image. This is done by selecting the part of the image you wish to use and then exporting it to the resolution you desire, normally that of your screen resolution. You can convert as many images as you wish and, you can even set the image you have just saved as your current desktop from within the program.
Re-release of version 1.26f using a typical setup installer rather than a clickonce deployment which was causing problems for some of our users.
Source : http://download.cnet.com