How to disable the right click context menu in the desktop in Windows Xp

Open the registry editor (Start > run > regedit)

Navigate to the following node in the registry editor:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

Now create a registry DWORD entry named NoViewContextMenu and set its value to 1.

Restart your computer.

To reverse the effect, change the value to 0 or delete the entry.