WinLock

Are your colleagues and relatives nosey and tend to sneak into your PC every time you go away for a cup of coffee? Are you worried that some malicious youths will destroy the system on a publicly available computer? Use WinLock to disable access to vital system features.
WinLock is a security tool that lets you disable various system features on your PC so that you only (or anyone else who knows the password) can access and enable them again. The program is capable of disabling hotkey combinations, access to Start Menu items, Control Panel, user-defined files and folders and more. Some features are available on Win95/98/Me only, while others can be managed on WinNT/2000/XP. The utility also lets you schedule the computer to shut down in a period of time or at a certain time.
The tool runs on system startup and places itself in the tray. You can disable and enable the program with a couple of mouse clicks. Try this security tool today and block others from fooling around with your computer.

WinLock is a comprehensive security solution for personal or publicly accessible computers. It is a program that ensures that only authorized people can access sensitive information on your computer. With WinLock you can control how long others can use your computer. It runs from the system tray and requires a password to gain access to the available settings. It loads automatically with Windows and allows you to add an optional startup message, provide audio notification, and set the time limit. Once that limit is reached, Windows is summarily shut down. You can toggle the timer on and off from the tray. When enabled, there is no way around it without the proper password. Parental control system lets you activate filters that allow access to websites that are useful for learning and reference only. That's why responsible parents install WinLock on every computer that their children use. WinLock also lets you to disable Windows hot keys (such as Alt-Ctrl-Del, Alt-Tab, Ctrl-Esc, etc.), lock Windows desktop, hide the Start button and Switch bar, lock files and folders, filter Internet content and much more...