Would she or wouldn't she? After much waffling, 60 Minutes' Diane Sawyer finally signed off as a CBS News correspondent and segued to rival ABC last week. She was apparently upset, among other things, at not getting her own interview-style news program. ABC wooed and won her by promising just that, a new prime-time show she will co-anchor with Sam Donaldson. Says Donaldson of the prospective partnership: "The only way it will work is if the co-anchors are together in word, deed and spirit, like a marriage -- and not a shotgun marriage either." Sawyer will receive a salary of $1.5 million at ABC, up from $1.2 million. But even that will not make her ABC's highest-paid newswoman. That honor still belongs to 20/20's Barbara Walters.