architecture document does not run cleanly through latex2html.  In particular, \renewcommand is not picking up the italicized ns-3 references, and there is a problem with the includegraphics command, preventing images from being generated.

latex2html is a perl script and is reportedly hard to extend.  A workaround that ns-2 has used is to run the latex sources through a pre-process.pl script, doing necessary conversions, then run the html through a post-process.pl script to tweak the generated html.

I expect that we can do the same for our latex documents, so a starting point would be to clone the pre-process.pl, post-process.pl, and Makefile from ns-2/docs/ and adapt them to ns-3; in particular, figure out what to do with the \ns, \nstwo, and \includegraphics commands in those scripts.