These ebuilds come from http://ohnopub.net/~ohnobinki/gentoo.
If you have some problems, go to the official site first.
tex4ht : Converts (La)TeX to (X)HTML, XML and OO.org ( http://www.cse.ohio-state.edu/~gurari/TeX4ht )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a ohnobinki
For Paludis use this rsync : rsync://gentoo.zugaina.org/ohnobinki-portage
If you have a problem : ycarus(-at-)zugaina.org