Andrew, there are a couple of things you should know:
 - MSXSL implements the old XSL proposal, which was obsoleted by the new
   XSL Working Draft that was released on 19980818. This means that developing
   new tools for MSXSL is rather pointless.
 - There are several other XSL tools, some of which implement the 19980818
   Working Draft:
   <URL:http://www.stud.ifi.uio.no/~larsga/linker/xmltools/by-standard.html>
--Lars M.