SystemLock - Version 1.1 Looking for a great way to secure your Windows 95/98 machine? SystemLock secures your computer against unauthorized access with a password you choose. All task switching keystrokes like CTRL-ALT-DEL, ALT-TAB, and CTRL-ESC are disabled. To disable SystemLock, simply click on the screen and enter your password. It also features a small program size and low memory usage. (Executable is only 28K in size.) Try it today!