1. Click start and type regedit in the search box or run2. Go to HKEY_CURRENT_USER\Control Panel\Desktop\ folder and click on it3. On the right hand side you will find a bunch of entries. Find the key named Wallpaper and double click on it and put the path of the picture you want as your new wallpaper (example path is C:\Users\Big Dan\Pictures\new wallpaper.jpg)4. Right-click on the Desktop folder in left pane click Permissions.5. Click Advanced6. Go to Owner tab, highlight your name in the box that says Change owner to ( There are only two choices the other is Administrator ) once your user name is highlighted click OK7. Click on Advanced again8. Uncheck the button that reads Include inheritable permissions from the objects parent click Remove when prompted9. Click Add10. Type Everyone and click OK11. Check Allow Read Control and click OK12. Click OK again13. Highlight Everyone and check to Allow Read and click OK14. Restart Computer