A context menu is displayed when a user right clicks on the desktop in Windows XP, by default. Implementing the Enable/Disable Desktop Context Menu edit will remove the ability to display a context menu by right-click the desktop, items on the desktop, and items in Windows Explorer. However, it does not disable context menus in Internet Explorer. This registry edit may be set on a user or machine basis.

To Enable/Disable for Current User

[Start] [Run] [Regedit]
Registry Key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.
Data Type: DWORD // Value Name: NoViewContextMenu
Setting for Value Data: [0 = Disabled / 1 = Enabled]
Exit Registry and Reboot

To Enable/Disable for Local Machine

[Start] [Run] [Regedit]
Registry Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer
Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.
Data Type: DWORD // Value Name: NoViewContextMenu
Setting for Value Data: [0 = Disabled / 1 = Enabled]
Exit Registry and Reboot