Acrobat 8 Pro Updater

In the last 4 months, we have Ghosted out 171 workstations in 4 countries with Acobat Pro 8 installed. Now we are getting the Acrobat Updater popping up and asking to be updated. The users do not have admin rights to run this. We want to be able to push a registry setting or something to all the workstations simultaneously to disable the Updater. Obviously, we don't want to have to revisit 171 workstations to run updates or to reinstall with some transform tool. Any help would be appreciated. Thanks.