I suspect you would not find anything at that URI, since those are typically used in XML files to simply provide a unique namespace for the types defined therein. I will forward this info to MS however. Darren From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On Behalf Of Alan & Margaret Sent: Thursday, July 17, 2008 8:47 PM To: gptalk@xxxxxxxxxxxxx Subject: [gptalk] Re: ADMX custom base addition Scott/Darren I checked out the reference given within the Windows.ADMX file which was http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions .. It doesn't exist. Alan Cuthbertson _____ From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On Behalf Of Scott Klassen Sent: Friday, 18 July 2008 12:59 PM To: gptalk@xxxxxxxxxxxxx Subject: [gptalk] Re: ADMX custom base addition Hey Darren, Alan and I, while looking into other issues, discovered why the Custom Base feature doesn't work. For Vista SP1 and Server 2008, MS updated some part(s) of the ADMX schema and added at least one new tag (element? Sorry, I'm not a dev and not very versant with xml), <or> </or>. MS didn't update the Syntax Reference Guide <http://www.microsoft.com/downloads/details.aspx?FamilyID=b0628355-baa2-4565 -80a4-467245db9e28&DisplayLang=en> http://www.microsoft.com/downloads/details.aspx?FamilyID=b0628355-baa2-4565- 80a4-467245db9e28&DisplayLang=en or the public schema references. Feel free to use some of those MVP contacts to give them a kick in the pants. Smile emoticon Scott Klassen