I want some suggestion that how I can put out of action the access for control panel, display properties etc for definite users? I want to do this because I am setting up a network a school. There I am making the basic file system and I want to allow the access to only some limited users. If it is allowed publicly then it is possible that the students can change some settings using control panel that can create a big issue. If you have any advice on this then please post your suggestion to me so that I can make a good system for the school.