xml xsl web architecture

I'm working on an xml architecture for the web, and would like to
avoid duplicating html as my own tagset...currently what I'm trying to
accomplish is:

Standard XSL libraries, ie - head, footer, menu written in xsl+xhtml.
at runtime, apply these stylesheets to an xml tree of the dynamic
data. ie - <userEmail></userEmail>
etc.

Previous xml architectures I've worked on convert <Para> to <p> with
xsl, I'd rather avoid this if possible.

Anybody point me to some examples or have any suggestions?

--
Anthony Ettinger
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