WB president of programming Garth Ancier resigned Monday last week in order to pursue his ambition of programming a full-time network.Ancier has been replaced at WB by his deputy Susanne Daniels. The two co-developed WB's current crop of hits including Dawson's Creek, Felicity and Buffy, the Vampire Slayer. Ancier is tipped to take over from Scott Sassa at NBC.