Gmax posted a link to a blog about this project in another thread but I can't reply to it for some reason.
Here's another link to another blog on this project
For anyone interested in actually doing something like this, there is also a much more "hands on" and technically detailed article on Don's conversion in the latest Home Power magazine. Alas, I left this issue up in Alaska just recently so I'm not sure of the issue number. I think it's issue number 119. It's whatever is on the stands now, though it's been out for a few weeks now.
By the way, Home Power Magazine rocks. I think it's the best magazine on the market, if you are interested in doing hands-on alt energy stuff.