Merhaba,

Task manager in iptali icin:

"Task Manager has been disabled by your administrator" error message
http://support.microsoft.com/kb/555480

JSI Tip 5263. How do I use Group Policy to disable Task Manager for a user?
http://windowsitpro.com/article/arti...or-a-user.html

Keyboard ShortCut larinin disable edilmesi icin:

http://support.microsoft.com/kb/181348

Emre AYDIN