A few dozen supporters, including health bloggers, individual physicians, startups, and Microsoft, have formed a group seeking to inject the rights of patients into the Obama administration's multibillion-dollar drive to computerize medical records. The group's effort begins with a Web site, HealthDataRights.org. The supporters all share the view that informed, motivated patients must play a much greater role in managing their own health if the policy goals of improving the quality of care and curbing costs are to be achieved. And, they add, health information technology, when used wisely, can help.