How to disable or limit access to the Control Panel (Windows NT, 2000, XP)

1- Run Group Policy; for this click Start > Run > and type gpedit.msc and press OK.
2- In left side under User Configuration section select Administrative Templates and click on (+) and select Control Panel. In right side :
3- In Windows 2000 double click on Disable Control Panel and in Windows XP double click on Prohibit access to the Control Panel.
4- select Enabled and press OK.
To hide Control Panel items from Control Panel window:
1- double click on Hide Specified Control Panel Applets and select Enabled.
2- click on Show; in new window click Add.
3- to hide Control Panel items from Control Panel type its name in dialog box.
For example : if you type System, Windows will hide System icon from Control Panel.Note that Group Policy will hide Control Panel items from Control Panel, a professional user can type sysdm.cpl in Run dialog box and run System Properties.