In regards to creating .dreams.
If I remember correctly one of the winners, or top choices, created their .dream and didn't even have Vista. They relied on other people to help test.
Even if you aren't on Vista, but still have the capability of making animations, it's still possible to compete.
I remember that also, ID. It is a fantastic idea. I have been doing a few test runs with .dreams, and I still have a XP system. I have relied on some great people to complile the dreams. I am looking forward to the 2008 GUI Championships.