CBS is expected to order more episodes of in-house “Dr. Quinn, Medicine Woman ,” which bowed to strong numbers last week with two-hour preem and first regular episode.Westwood One’s struggling KQLZ-FM has dropped its “Pirate Radio” label and changed its play list, mixing new music with current album-oriented rock. Newly restructured “alternative” rocker will temporarily forgo DJs with exception of a.m. man Greg Stevens and co-host Steven O. World International Network has inked a deal with Longbow Prods. to distribute the upcoming CBS movie “Lethal White Female,” starring Tim Matheson and Tracy Pollan, and “Murder on the Rio Grande,” currently in pre-production.