I had a tough time finding a compiled binary for mod_proxy_html (mod_proxy_html.so) and thought I should share now that I've found it. First, some obligatory keyword stuffing: mod_proxy_html.so is a compiled binary third party contributed module for apache SuSE 10.1. I couldn't find it on rpmfind. To learn to use it, check this tutorial on setting up a reverse html proxy, but then, you probably just came from there!

In SuSE, this file lives in:
/usr/lib/apache2

and symlinks from:
/usr/lib/apache2-prefork

like all the other apache modules.