I have Vista Home Premium and my son put a guest user on without my knowledge and now I want to remove it and as much as I try this doesnt work. I haved tried all the googling but when I get to the screen that you click to delete that option is not there. All I have is turn on or off or change password for guest user. It means that everytime I leave my laptop for a extended period of time I have to type my password in (a pain) again as I am the administrator. Can anyone help?