Appearances are deceiving in "V," a thrilling new drama series about the world's first alien encounter. With huge spaceships simultaneously appearing over 29 cities around the world, the Visitors (or V's) seem to promote a message of peace. Through their generous offer to share advanced technology, the V's quickly build a following that may be overlooking a more malevolent agenda. The premiere of "V," from Warner Bros. Television, airs TUESDAY, NOV. 3 (8:00-9:00 p.m.), on ABC. In the foreground standsMORRIS CHESTNUT.