Ooohhh, hahaha, I just noticed that you're trying to get Windows users to use a text editor like VIM. +1 geek points to you, but I'm quite positive that this HAS to fail.
I've had a look at the file structure. While there seems to be no parsers/converters at all for the UTL thing, it would be quite easy to write something for this. I could write something which outputs a big-*** HTML document, for example, but since all the text is considered pre-formatted and uses text-style bullet lists etc., I don't think that it's very feasible. If anybody wants to have this more portable, then I'd like to ask you to either use a text format which allows a little more markup, like the format that man pages use or Perl's POD, or just really start a Wiki on this and do it all in Wikitext.