Compiled by Winelfred G. Pasamba (April 15, 2008)

Method 3

* Open Registry Editor (Regedit.exe) and navigate to:

HKCU \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies\ System

* In the right-pane, double-click DisableTaskMgr and set it's data to 0

Method 4: Using Group Policy Editor [ Windows XP Professional ]

* Click Start, Run, type gpedit.msc and click OK.
* Navigate to this path

User Configuration
=> Administrative Templates
==> System
===> Ctrl+Alt+Delete Options
====> Remove Task Manager

* Double-click the Remove Task Manager option.
* Set the policy to Not Configured.

the above from http://windowsitpro.com/article/articleid/14831/how-do-i-enable-ctrl-esc-to-start-task-manager.html


Enable Registry Editing
run gpedit.msc
User Configuration->Administrative Templates->System
 ->Prevent access to the command prompt -> Disabled
 ->Prevent access to registry editing tools -> Disabled
 ->Ctrl+Alt+Del Options->
   ->Remove Task Manager -> Disabled
   ->Remove Lock Computer -> Disabled

the above from http://whiterbunny.wordpress.com/2006/03/01/enable-regedit/