1st Security Agent Pro is an excellent password-protected security utility to secure Windows-based computers and restrict access to them. 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, and Add/Remove Programs.
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, hide local and network drives, disable the DOS prompt, boot keys, real DOS mode, Registry editing, taskbar, task manager, and network access, and hide desktop icons. Version 7.6 has restrict access to key features of Windows.