Is there any software our there that blocks the user from accessing the system time settings so they don't change it. Of course there would have to be an administrator function so someone that needs to change the time could but for the regular user can not. The regular users are administrators on their computer and have to be due to other constraints so group policies won't work. I've searched the internet and did not receive alot of good hits. I need it to be XP and vista compatible. Any suggestions?