Well in case you missed it (and i guess that you may have) the App-V ADM template got officially released. Check out and download from http://www.microsoft.com/downloads/details.aspx?FamilyID=67cdf9d2-7e8e-4d76-a552-fd82dbbff9bc&DisplayLang=en
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Read the complete post at http://blogs.technet.com/virtualworld/archive/2008/10/02/microsoft-application-virtualization-administrative-template-adm-template.aspx