Virgie Arthur, the mother of former Playboy playmate Anna Nicole Smith, has filed a libel lawsuit against a Houston TV station, CBS Studios Inc. and the late model's former companion, Howard K. Stern. The suit alleges that Stern arranged for Smith to appear in an Entertainment Tonight interview where the model stated that Arthur was complicit in Smith's childhood physical and sexual abuse. The lawsuit says the program aired on KPRC Channel 2 in Houston on Feb. 14, a week after Smith died at the age of 39. CBS Studios produces the program, which is broadcast locally on KPRC, an...