Word on the street is it’s pretty well done: http://www.leedforhomes.org/OST/homepage.aspx
Did it work well for you?
Update: I got a chance to give this a spin. The “quick score” is straightforward and works well (the dream building I entered came in about half way between Gold and Platinum). The more detailed scoring gets into a few areas where making one choice takes several others off the table, but other than that and the time it takes to go through all the myriad details, it also works well. Give it a try.