Use MS Active Directory to enforce a secure screensaver policy
If walking up to each and every machine in your network and do the required screensaver configuration isn't an option then using MS Active Directory is perhaps a better solution. Through a MS Active Directory Group Policy you can in one blow configure all the machines in your network.
Use the [Group Policy Management] tool to create a new GPO or add to existing and apply it to the machines in your network. Should any computer fail to implement the GPO be sure that Panorama9 will lookout for you and report problems.