He began his career at the Walt Disney Company as an assistant to Marty Katz, senior vice president of Television/Feature Production.
Six years later, after directing a string of documentaries and commercials, his feature directorial debut came in 1993 with Just Like Dad, starring Wallace Shawn and Nick Cassavetes.
This would be the first of three films created for the Disney Channel, along with The Paper Brigade (with Kyle Howard and Robert Englund) and Wish Upon a Star (with Katherine Heigl).
These episodes included Shelley Long, Paula Abdul, Edward Asner, Stacy Keach, Sheena Easton, Ernest Borgnine, Ray Walston, and Andrew Dice Clay.
Treu has also produced and directed numerous educational films and documentaries, such as two 90-minute TV specials Bridge to China and Full Circle.