Embedding docbook XML into PDF

Hi,

Anybody here have experience embedding Docbook XML into a structured PDF? I know that PDF has a set of standard markup/tags that you can use to tag the content, but it's not docbook and according to http://help.adobe.com/en_US/acrobat/X/pro/using/WS58a04a822e3e50102bd615109794195ff-7cd8.w.html, you would need to map your custom tags into this standard markup. Can anybody point me to the right direction in doing this automated or if manually, is there a guide that can help me map the standard PDF markup to Docbook?

Thanks,

-- Jeff