hello , me and a teacher are trying to make a application that will log how long a student is logged and if he went on the internet (wich may not be done while in class , only in spare time) but the application is hidden and not seen on the screen but they can still see it in the TASK MANAGER and still stop it (the hard way) and i know there is a way to hide it even from there but i cant seem to find source codes for that.

I need them for windows nt , 98 and 2000 and xp :s