The first charged against him, for having heroin, was dropped. He pleaded guilty to the possession of coke and ecstasy charges.
Dourdan's mega-lawyer, Shawn Chapman Holley, tells TMZ he will enter a treatment program -- but it isn't rehab -- that consists of 30 hours of classes which usually meet once a week. He needs to enroll in the classes by June 11 and the charges will be dismissed when he completes the program.
UPDATE 2:10 PM PT: TMZ has learned Dourdan has already enrolled in a treatment program. Talk about not wasting any time!