Another week, another award for Sofia Coppola for ''Lost in Translation.'' The writer-director won the Writers Guild of America's prize for the year's Best Original Screenplay at Saturday night's simultaneous Los Angeles-New York ceremony. She cemented her status as the Oscar frontrunner in her category, while the similarly quirky script for ''American Splendor'' won the Best Adapted Screenplay prize. The Harvey Pekar biopic's screenwriter-directors Shari Springer Berman and Robert Pulcini now enjoy renewed momentum going into this weekend's Oscars, where they face such stiff competition as ''Mystic River,'' ''Seabiscuit,'' and ''The Lord of the Rings: The Return of the King.''
Among the TV prizes, winners for episodic scripts included ''24'' (drama), ''Frasier'' (comedy), and ''The Simpsons'' (animation). Prizes for made-for-TV movies went to HBO's ''And Starring Pancho Villa as Himself'' (original) and Showtime's ''Out of the Ashes'' (adapted). ''All My Children'' won for Best Daytime Serial.