Does anyone know where I can get the movie The Theory of Flight on original DVD format?

As a frustrated artist who can't build himself a flying machine, Richard (Kenneth Branagh) eventually finds himself in trouble with the law. As punishment for his eccentric behavior, he accepts community service in the company of Jane (Helena Bonham Carter), a strong-willed woman suffering from the neuromuscular disorder called ALS (otherwise known as Lou Gehrig's disease). As the two learn from each other, Jane turns to Richard with the biggest favor of all, helping her lose her virginity. What ensues is a romance/friendship that changes their lives forever.