After conquering the reality genre, Donald Trump is setting his sights on scripted series. Sources said "The Apprentice" star/executive producer is in talks with NBC for a primetime drama series that would be set, at least in part, at the Trump Tower, Trump's posh skyscraper in Manhattan that also hosts the contestants in "The Apprentice." Writer-producer Gay Walch (the WB Network's "Summerland") is being eyed to pen the project, tentatively titled "The Towers." Trump is expected to serve as an executive producer. Trump and Walch are repped by CAA.