It’s soon time to start blog about using PowerShell to support your Group Policy environment but here’s a start from Group Policy Team blog from MS.
You can, if you want to, search for just about everything inside a gpo and here is something to prove it from a blog post from GP Team blog.
Check it out: http://blogs.technet.com/b/grouppolicy/archive/2010/09/14/more-on-searching-group-policy.aspx
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