When looking for the Group Policy settings for Microsoft Silverlight I only found them in ADMX format. Since I wanted to add them to a GPO in a Windows 2003 domain I needed the ADM file.

So I created the ADM file myself by using the Microsoft documentation and the ADMX and ADML files here: http://www.microsoft.com/GetSilverlight/resources/documentation/grouppolicysettings.aspx

They are mostly Computer settings but also one User setting for DRM. If you want to use this user settings based on a computer OU, you need to take a look at loopback processing of Group Policy.

I'm not really sure which versions are supported of Silverlight with these settings, but they are the same as used in the official Microsoft link mentioned above.

Before you download this custom ADM template read the following disclaimer:

Disclaimer: Use this Silverlight.adm template at your own risk. I'm not responsible for any problems or issues that arise after you implement this ADM template. Neither do I offer any form of support.

  Custom ADM Template for Microsoft Silverlight.

Right-Click, Save Target As and remove the .txt extension.