A. You can lock the taskbar in XP by right-clicking the taskbar and selecting Lock the Taskbar. You can also edit the registry to lock the taskbar by performing the following steps:

  1. Start the registry editor (regedit.exe).
  2. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced.
  3. Double-click TaskbarSizeMove.
  4. Set the TaskbarSizeMove value to 0 to lock the taskbar or to 1 to unlock the taskbar, then click OK.
  5. Close the registry editor.