Microsoft BGInfo automatically displays relevant information about a Windows computer on the desktop's background.
How many times have you walked up to a system in your office and needed to click through several diagnostic windows to remind yourself of important aspects of its configuration, such as its name, IP address, or operating system version If you manage multiple computers you probably need BGInfo. It automatically displays relevant information about a Windows computer on the desktop's background, such as the computer name, IP address, service pack version, and more. You can edit any field as well as the font and background colors and can place it in your startup folder so that it runs every boot, or even configure it to display as the background for the login screen.
Because BGInfo simply writes a new desktop bitmap and exits you don't have to worry about it consuming system resources or interfering with other applications. However, this did freak us out after running it because you might forget that it only changes your wallpaper. We were thinking you needed to uninstall it, but all you need to do is go to your display properties and change your wallpaper back.