"In Treatment," HBO’s psychiatric drama, premiered last season to universallyterrific reviews, and then hardly anyone watched it. Gabriel Byrne playspsychiatrist Paul Weston, and Dianne Wiest plays his psychiatrist, Gina.Wiest picked up an Emmy for her performance and Byrne was nominated, as wereseveral other cast members, for their roles in that first season. Despiteless-than-stellar ratings for its maiden season, HBO has renewed the drama. Season 2, Sunday.