Changes at Dish Network: Warren Schlichting, ex-Comcast, named senior...

Changes at Dish Network: Warren Schlichting, ex-Comcast, named senior vice president of media sales; Keith Nyhouse and Stephanie Pence, both ex-Qwest, join Dish as vice presidents of e-commerce and national advertising, respectively … Thomas Carson, Rovi executive vice president of worldwide sales and marketing, named CEO, replacing Fred Amoroso, effective immediately … Tom Rutledge steps down as Cablevision Systems chief operating officer … Hunter Nickell resigns as president, Speed network, will “explore opportunities within the Fox Sports Media Group,” replacement not yet named … New Media Strategies Founder and Chief Executive Officer Pete Snyder resigns to form venture capital firm.