In the January issue of TechNet Magazine, Jeremy Moskowitz delves into ADM files, discussing the importance of ADM files, how they work, and what their limitations are. He even shows you how to add, edit, and view your own ADM Template files.
Jeremy then takes a close look at the new ADMX files, discussing the benefits they offer. Here you'll also find out how you can (and why you should) convert your custom ADM files to ADMX using the ADMX Migrator Tool.
And for more information on ADM and ADMX files, check out the Managing Group Policy ADMX Files Step-by-Step Guide.
Group Policy, Microsoft, ADM, ADMX, Guide