This is a utility I wrote when I worked in an IT department. It lets the user (typically an administrator) define a standard desktop wallpaper with image overlays and information about the system.
I tailored it to my need and added some useful features such as multiple resolution wallpapers.
WPInfo is a .NET WinForms application, and it's open source so anybody can go and tweak it to their needs.
I've recently moved the project over to GitHub and it's gotten many interesting contributions, got check it out!