What version of Windows are you using?
Edited to add:
Ok either way -
From:
infopackets * Click Start -> Run. Type in "regedit" (no quotes) and hit Enter.
* Search for HKEY_CURRENT_USER -> Software \ Microsoft \ Windows \ CurrentVersion \ Policies \ System.
* Look for: DisableTaskMgr. Click on REG_DWORD. Value: 1=Enable this key (disables TaskManager); Value: 0=Disable (actually enables TaskManager)
* Close RegEdit
* Reboot your machine.
Please note the name of the Key "Disable Task Manager" when Enabled will actually disable TaskManager. I know it's confusing, but please pay attention to the setting (the value 0 will enable it).
There is more detail on web site, but the above instructions should fix the problem for most home users.
And as always: make a backup of your Registry before making changes to it.
// But I have to be honest, futzing around the registry always makes me nervous.
Does anyone know of an easier way?