The Bills have promoted national scout Buddy Nix to general manager. Nix was introduced at a news conference Thursday, filling a void after Marv Levy stepped down as general manager following the 2007 season. "I'm here to introduce somebody that we've needed for a long time, something the fans and everybody in the area and myself have wanted, and that's a general manager of football," owner Ralph Wilson said. "We really needed somebody who knew all aspects of football."