I am trying to follow along with the tutorial(creating a new package called notes) but I encountered a problem.  I was told to edit the "index.xml" file.  I was supposed to run the make command but I get some errors.  I did some reearch and I realized that I need doc-xsl or xsl-stylesheets folder which I have installed. I tried to run make again and this is the error I received
cp -u *.png ..
cd .. ; /usr/bin/xsltproc ../../../acs-core-docs/www/xml/openacs.xsl xml/index.xml
xmlNanoHTTPConnectAttempt: Connect attempt timed out.xmlNanoHTTPConnectAttempt: Connect attempt timed out.xml/index.xml:3: warning: failed to load external
entity "http://www.oasis-open.org/docbook/xml/4.0/docbookx.dtd"
               "http://www.oasis-open.org/docbook/xml/4.0/docbookx.dtd">
                                                                       ^
Writing requirements-introduction.html for sect1(requirements-introduction)
Writing requirements-overview.html for sect1(requirements-overview)
Error Undefined namespace prefix
xmlXPathCompiledEval: evaluation failed
make: *** [html] Error 10
I also need to download Docbook XML DTD and get xsltproc.  How do I go about handling all that?
Thank you
James