Software Documentation weblog by Lars Trieloff has interesting links on handling documentation (mostly DocBook), including a simple guide on how to get started with xml2po.
But, the main point here is rendering DocBook directly in Mozilla using nothing but CSS: related to discussion I had with Tomica yesterday: Docbook rendered using nothing but CSS.
Be sure to check out some examples, and lets get working on improving this further for our own purposes (eg. using it for Slobo's manual: like this).