Notes

Firstsource.com, a Santa Ana-based Internet portal, Thursday named D’Arcy Masius Benton & Bowles in Los Angeles as its advertising agency. Billings are estimated at $20 million. A unit of En Pointe Technologies, Firstsource.com markets computer and office products on the Web. . . . Sun International named Los Angeles-based Ground Zero to handle the $6 million to $8 million campaign for Resorts Casino Hotel in Atlantic City. The agency previously did promotional work for Sun’s Atlantis resort in the Bahamas. . . . Frank Comerford on Thursday was named executive vice president of sales for NBC TV stations, charged with heading the network’s in-house sales departments for its 13 owned and operated stations. He replaces Ray Heacox, who in March became president and general manager of KNBC Channel 4.