WebJunction

Our library is running SteadyState on Vista. I would like to know exactly what happens when you are logged on as Administrator and get the following warning:
Windows Disk Protection Is On
The computer is about to restart or shut down. You must select one of the following options in the time remaining or the computer will automatically continue and remove all changes.
Continue and remove all changes.
If you choose this option, you will lose all changes when the computer is restarted or shut down because Windows Disk Protection is set to Remove all changes at restart.
Save changes and then continue.
After the changes are saved, the Remove all changes at restart settings will be turned back on for the next session.

When I log on as administrator AVG update pops up and downloads updates. If I choose Save Changes and then Continue, will it actually save the updates permanently? Or do I still have to go in to Windows Disk Protection, change the setting to Retain all changes permanently, restart the computer, log on as Admin and change the setting back to Remove all changes at restart?
AVG has written a script to allow updates in SteadyState but I'm not having any luck finding the script file after I download it from AVG. If the "warning" actually works the way it sounds, my virus update problem would be easily solved.