  System Lock by r2 Studios Windows 98 has a so-called, "password protection", but all this is used for is to customize the desktop, there is no protection at all, just press escape and you're in. But there is a program that can lock your Windows 98 machine by using urlLink System Lock . System Lock is an amazingly small and simple program just over 100kb.
I was impressed by is sheer simplicity. Just set a password and you're done! There are a few more options, but they don't really need to be changed. The website said that on 2000 and XP the program was easily bypassable, but I found no way to bypass the password screen. This program will definately get rid of your Windows 98 security problems. 5 OUT OF 5 
