I have to desabled my task manager permanently,. but how??????

To disable task manager permanently you will need to follow these instructions carefully, REMEMBER; here you are in the REGISTRY and mistakes may cost the operating system to crush:: Go to this page and download a small GUI. This small GUI (Graphical User Interface) utility allows you to easily enable or disable Task Manager. The only time its useful, or effective, is when you see this error message when you try to use Task Manager. OR
Disable Task Manager Task Manager has setting controls that anable for users to start and Task programs and view processes, running applications and make changes to the priority or state of the individual processes. To disable it you will need to do the following :
Click "start" click "Run" type "regedit" enter this opens your registry then find the key below.
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
Create a new DWORD valued named "DisableTaskMgr" and set it to= "1" to disable Task Manager. to re-enable it set it to= "0" Don't forget you may need to log off for the changes to take effect.