Disable/enable wallpaper

Open your registry and find the key below.

Create a new DWORD value based on the options below, and set the new value to equal "1" to enable the restriction or "0" to disable the restriction.

NoChangingWallpaper - Disable the ability to change wallpapers.
NoComponents - Disable components.
NoAddingComponents - Disable the ability to add components.
NoDeletingComponents - Disable the ability to delete components.
NoEditingComponents - Disable the ability to edit components.
NoCloseDragDropBands
NoMovingBands - retrict adjustments to desktop toolbars
NoHTMLWallPaper - only allow bitmaps (BMP) as wallpaper

Note: These restrictions can be used either on a user by user basis by adding it to HKEY_CURRENT_USER or on a computer wide basis by adding it to HKEY_LOCAL_MACHINE.

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop]
System Key: [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop]
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = disable restriction, 1 = enable restriction)