PC Access control

I'm looking for a simple program that will, when activated reboot a PC running windows 98,ME, 2000, or XP with no prompting AFTER a specified time period. So, you run the program by clicking on the icon, and it prompts you "Please enter time limit:" and asks you to enter hours and minutes. Five minutes before the time elapses the message "you have 5 minutes left until the PC turns off" will be displayed. After the time elapses, the pc simply reboots to the point where the power-on password is required. Now, the kicker is, I do not want this program to be able to be turned off via the task list by "end task". Once you start it, it has to run to completion and there has to be no way to turn it off by the user. The purpose of this program is to keep my kids from using the computer for all hours of the night. I can set a time that says "you're off in 1 hour 30 minutes" and that's it. As for what it gets written in, it doesn't matter as long as it meets the requirements as outlined. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform Will have to run on all versions of windows EXCEPT windows 3.1 and 95.