If I navigate to the wallpaper selection options under Personalization, I can browse and 'select' a new picture. However, nothing shows up on my actual desktop - just plain black background. Everything else about the machine is operating normally, including the sidebar.
I think there may have been a registry setting that is preventing the wallpaper from displaying, but I can't locate any threads that discuss how to resolve this or where to look. Note, I do not have any policy settings regarding the wallpaper on this machine.
OS is Vista Ultimate.
Thanks for your help.