Hello again. Do you have people changing your wallpaper on your computer and don't want them to? Well you can put a stop to that. All you have to do is set up the group policy and hope they don't figure out how to do it as well. All you need to do is type gpedit.msc in the start menu or the run prompt. After that just follow these steps. Under user configuration click on administrative templates then desktop then click on the desktop under its menu. After that just right click on desktop wallpaper and click on edit. Then press enabled and type in the location of the wallpaper you want locked then press apply and okay. This should lock the desktop from the wallpaper from being changed. If you have windows 7 this is the steps but if you have windows xp the steps will be a little different but in the same place. If you have any questions just leave a comment.