I would like to know how to load an run a program before windows explorer loads during the booting of Windows 98. This is similar to the loading and running of anti virus software such as Norton which load and run before the loading of windows explorer. I know this is possible by some how tweaking the windows registry. My instructor had implemented a program to authenticate students logging in to their computers when I was a college student. A login form would pop up before loading of windows explorer asking the students to enter their user name and passsword. The system would then boot normally once the the data was verified; otherwise it would give an error message and redisplay the login screen. Does anybody have any idea how this type of authentication can be implemented?