Enable Custom screensaver via group policy

Screensaver Enable

Setting a default screen saver with settings that will be compatible with changes in Windows 7 and with your existing Windows XP and Vista clients.  Start with a Group Policy Object (GPO) that is linked to the OU where your user accounts are located in Active Directory. This can be either a new GPO or an existing GPO that may already have other settings you want applied to all of your users.

Go to Policy > User Configuration > Administrative Templates > Control Panel > Personalization. Here are the policies you’re looking for:

Policy Setting Option Enable Screen Saver Enabled Force Specific Screen Saver Enabled scrnsave.scr Password Protect Screen Saver Enabled Screen Saver timeout Enabled Time set in seconds (900 in the example)