Prohibit access to control panel in windows Vista & windows xp

Control panel is the core of windows operating system.Using this we can tweak any setting in windows .If you dont want others to mess with your system settings you can prohibit access to control panel in two ways.
Either by using GPEDIT.MSC or by tweaking Registry.you can tweak through gpedit in Windows xp professional,windows vista business,ultiamte editions .For other version of windows Registry will do the trick .
Let's start with Regedit.
1)Open Registry editor by typing Regedit in Run dialog box.
2)In windows vista  UAC dialog box opens click on continue.
3)Navigate to the  following paths
 HKEY_CURRENT_USER\software\Microsoft\Windows\CurrentVersion\Policies\Explorer
 HKEY_LOCAL_MACHINE\software\Microsoft\Windows\CurrentVersion\Policies\Explorer
4)Create a dword  NoControlPanel in both the above hives and set its value to 0 to disable the control panel or set its value to     1 to enable the Control panel.

Using Gpedit.msc 
1)Invoke grouppolicy editor by typing Gpedit.msc in run dialog box.
2)In windows vista click on continue in UAC.
3)In the left pane navigate to User configuration\Administrative Templates\Control panel.
4)In the right side pane Click on Prohibit access to Control panel select properties and select Enabled.