Yes if you are a 501(c)(3) Nonprofit organization. (There is an $8 handling fee imposed by the organization that handles the donation, but the actual Windows liscence from Microsoft is free)
So now once i've bought a movie, I now have to buy a piece of software to play the movie on my PC? (Considering someone doesn't know how to get illegal versions).
wow... I think they are just pushing people to pirate more, rather then less these days...