Hello, I am trying to implement a RIS server to deploy unattended installation of Windows XP. But I am asking few question about security. Especially with the Client Installation Wizard, in fact, as I can see, a user with a working computer with PXE-boot enable and no admins rights could easily launch the RIS startup, logon himself with its own account to completely reinstall its own computer (and then loosing all local data...) I want to know if there is a way to allow only a special group/user account (even admin) to be able to complete/launch the Client Installation Wizard process. Or showing me how to increase the security process with RIS. ps : I also try to create a special delegation control on a group for joining computer, and changing GPO to allow only a special group to join a computer to the domain but unsuccessfully... Thanks in advance.