Rebecca De Mornay must serve three years probation after a no contest plea was entered Tuesday on her behalf to a misdemeanor drunken driving charge.

Los Angeles Superior Court Judge H. Chester Horn also ordered the 48-year-old actress to complete a three-month program for DUI offenders and pay $350 plus unspecified penalties.

Defense attorney Blair Berk entered the plea on the behalf of De Mornay, who wasn't in the courtroom for the brief hearing. A second DUI charge was dismissed as a result of the plea, said Sandi Gibbons, a spokeswoman with the Los Angeles County district attorney's office.

De Mornay was arrested Oct. 30 for a traffic violation in Beverly Hills when officers smelled alcohol on her breath.

De Mornay is best known for playing the prostitute who befriends Tom Cruise's high school student in the 1983 film "Risky Business." She also starred in the HBO surf drama "John From Cincinnati" and the films "The Hand That Rocks The Cradle," "Lords of Dogtown" and "American Venus."