How to enable or disable Task manager in windows XP

If you want to enable or disable the Windows XP Task Manager then there is a quick way.
Click Start, Run and type Regedit.exe ,now navigate to the following key;
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System ,on the right pane select DisableTaskMgr and open it.
now adjust the values accordingly:
Value: 1=Enablethis key, that is DISABLE TaskManagerValue
0=Disablethis key, that is Don't Disable, Enable TaskManager

when you have changed the value click on OK ,Exit Regedit and restart your computer.