Tag Field in Windows Explorer 7

[gmathias]

Is it possible to set a metatag field in the shell that can will show up and be searchable as a "Tag" under windows explorer?

Thanks.

[RTT]

The Keywords standard PDF metadata field is mapped, by the PDF-ShelTools Property Handler, to the Windows Tags (System.Keywords) property, and the Property Handler is also used by the Windows Search Indexer to index all the properties it exposes, so yes, you just need to edit that Tags property, using the Shell Details Pane or file properties details tabsheet, to edit and have that metadata property indexed.
If it is not working for you, try rebuilding the Windows Search index