Prevent users from changing sstext3d.scr text

Hi All,

I have set up a GPO to specify the sstext3d.scr as the screen saver for all Windows 7 desktops and have prevented users from changing it via the Personalize UI. However, users can still change the text displayed by running the sstext3d.scr on the command line and overrides the displayed text until they next login or when GPO is applied at intervals. Is there a way to prevent users from being able to set their own text?

TIA,
Vlad

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Ebor