Popular Mechanics have a fascinating how-to guide on the Google sponsored prize to get private enterprise onto the moon.
They helpfully conclude:
Realistically, the odds seem to be against a prize-winning lunar mission by 2012. But take heart: Lindbergh and Rutan beat long odds. If you manage to snag a friendly billionaire and follow our how-to guide, there’s no reason you won’t be ready to join the pantheon of aerospace prizewinners.