Disable the windows task Manager

Need t limit access to your computer by disabling the Task Manager?
Her is a simple registry hack to do this:

Open the Registry Editor and navigate to the following key:
HKEY_CURRENToUSER\Software\Microsoft\Windows\CurrentVersion\Policies
Right –click on “Policies”. Select New-> Key and name the key as System.
If you are on Windows XP, you need not create the new key “System” as it is already present in it. So, you can directly navigate to : HKEY_CURRENT-USER
Software\Microsoft\Windows\CurrentVersion\Policies\System in the step-1
Itself.
Right click on “System”, create a new “DWORD” and name it to DisableTaskMgr.
Double-click on the DWORD “DisableTaskMgr” and set the “Value data” to 1 (0=Enable, 1=Disable).
To enable the Task Manager, Set the “Value data” back to 0.
Works on Windows XP, Vista and 7