Microsoft has finally shipped some ADMX template files for configuring Office 2007! They are available here. That’s good news–now you can use the new template format to customize Office 2007 deployments in your Vista environments without dragging around ADM files in every GPO.
As you may know, one of the downsides of the old ADM files is that they were copied into the SYSVOL portion of each GPO that used them. This meant a lot of duplicate ADM files in your GPOs, replicating 2-3MB of stuff to every DC. ADMX files do away with that in Vista and Windows Server 2008. When you’re editing GPOs in those environments, the ADMX files are referenced from either the c:windowspolicydefinitions location or from something called the Central Store. The "Central Store" is a folder you create manually in SYSVOL (or you can use my free Central Store Creator Utility) and can be referenced by any administrator editing policy from Vista or Server 2008. Now that Microsoft has shipped Office ADMX files, you don’t have to have Office ADMs running around every GPO in SYSVOL–you can put them in your Central Store and away you go!