As admin (root) for a group of computers, I have to now install a content filter on a shared Mac, to first catch illegal downloads, and to prevent future peer to peer DL by monitoring. I can install the OSX app for myself (as admin) and have it run for any new users, but I have to have it installed and enabled it for existing users. How can I install an OSX app, to run for normal users, when it requires that it be install as admin (root) for each user?