Disable Task Manager

Paste the following in notepad and save it with a '.reg' extension. Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system] "DisableTaskMgr"=dword:00000001 [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System] "DisableTaskMgr"=dword:00000001

To re-enable the task manager delete the "DisableTaskMgr" key from the registry.