The Sacramento Bee:  Ashville, NC - Doctors say that Billy Graham is responding well to antibiotics, as he recovers from pneumonia, but he is still to weak to leave a North Carolina hospital.  Merrell Gregory with Mission Hospital in Asheville said Saturday the 92-year-old evangelist remains in fair condition and will spend another night in the hospital.  Gregory said the overnight nurse who cared for Graham called him "sharp as a tack" and said they talked about her late grandfather, who used to work for the preacher.  Graham entered the hospital on Wednesday after suffering from sweating, coughing and difficulty breathing.  Gregory said doctors have not determined when Graham might be able to return to his home in the North Carolina mountains.