Veterans Traumatic Brain Injury Treatment Act of 2007 - Directs the Secretary of Veterans Affairs to: (1) establish a program to screen veterans eligible for Department of Veterans Affairs (VA) hospital, medical, and nursing home care for symptoms of traumatic brain injury (TBI); (2) develop and carry out a program of long-term care for post-acute TBI rehabilitation; (3) establish a TBI transition office at each VA polytrauma network site to coordinate the provision of health care and services to veterans who suffer from moderate to severe TBI and are in need of health care and services not immediately offered by the VA; and (4) establish and maintain the Traumatic Brain Injury Veterans' Health Registry.