How to disable task manager in Windows Vista/ XP [Group policy/gpedit]

::Disable the Task Manager using Group Policy Editor::

• Start Group Policy Editor (Start > Run > "gpedit.msc")

• In the left panel, go to User Configuration > Administrative Templates > System > Ctrl+Alt+Del Options

• In the right panel, enable Remove Task Manager

• Select option Enabled and it will prevent users to monitor tasks and services running in the system.