Most of us are aware of the Robin Roberts story. Robin, co-host of ABC TV's Good Morning America, found out, several months ago, that she was suffering from a serious illness and would need a bone marrow transplant to save her life. That is tough news to get. But Robin attacked it, and she and her doctors searched for a donor. It needed to be a perfect match and they found one...her sister. How lucky she was. And now, all these months later, she has returned to Good Morning America. She's not totally out of the woods yet, but as she recovers, her prognosis is excellent. All thanks to the National Marrow Donor Program’s international registry.