You can disable or enable Control Panel with 1st Security Agent software.

1st Security Agent is an excellent password-protected security utility to secure Windows-based computers. It works under any Windows platform and offers an administrative support for controlling which users are allowed to access your computer and the level of access each user may have. You can choose to restrict access to lots of Control Panel applet functions, including Display, Network, Passwords, Printers, System, Add/Remove Programs, etc. You can also assign separate system profile folders to each user, providing each with their own custom Desktop, Start Menu, Favorites, My Documents, etc. Additionally, you can: disable Start Menu items, lock local, network and USB drives, disable the DOS prompt, boot keys, real DOS mode, Registry editing, taskbar, task manager, and network access, hide desktop icons, and much more. You can apply password protection to Windows and restrict users to running specific applications only. Security restrictions can be applied universally or just to specific users. 1st Security Agent also supports Internet Explorer security that enables you to customize many aspects of the Internet Explorer Web browser. It lets you disable individual menu items, prevent others from editing your Favorites, disable individual tabs in the Internet Options dialog, as well as specific settings from each tab. 1st Security Agent allows you to import and export PC security settings, and offers a flexible and complete password protection. You'll find the program interface very easy to negotiate.



Option affects selected user, see the status bar. Reboot your PC to activate or deactivate this option.

Applicable to Windows 2000/XP.

You can download it from here.

Or you can edit your registry. This setting allows you to restrict user access to the Control Panel options and settings.

Open your registry and find the key HKEY_CURRENT_USER -> Software -> Microsoft -> Windows -> CurrentVersion -> Policies -> Explorer.

Create a new DWORD value, or modify the existing value called 'NoControlPanel' set the value to equal '1' to enable the restriction.

Exit your registry, you may need to restart for the changes to take effect.