I am testing a GPO for an environment that has domain controllers in 3 versions of Windows Server. My studies are strictly 2008 R2 and later which use .admx files. I want to use a GPO for excel or outlook and I understand the core concept. However my question is, if the PDC is 2003, should I target that machine and if so, do I ONLY use the .adm files, will the client Windows 7 machines and Server 2008 R2 be able to translate those accordingly? My understanding is that I can use the adm files only and they will apply to everything (even Windows 8) is that accurate?
Any insight or kbase documents would be great, I have my 70-640 book here and it mentions nothing of the 2003 machine, in my case is a PDC.