HOLLYWOOD — Johnnie Walker will head the urban promotion department of DreamWorks Records, having ankled Island Def Jam Music Group, where she was senior veep of R&B promotion.

During her 12 years at Def Jam and the Island Def Jam Music Group, Walker was instrumental in developing the careers of Jay-Z, Ja Rule, Ashanti, Ludacris, DMX, Dru Hill and Montell Jordan, as well as fostering the success of the “Rush Hour” and “The Nutty Professor” soundtracks.

“We believe her dedication, extensive experience and close relationships to program directors across the country will have a profound impact on DreamWorks’ urban operations, and I feel Johnnie will serve as an inspiration to the company overall,” said DreamWorks Records senior exec Johnny Barbis. Barbis was prexy of Island Records during Walker’s tenure at Island Def Jam.

Walker will divide her time between DreamWorks Records’ Los Angeles headquarters and the company’s New York City offices. Her first projects are upcoming records from Dave Hollister, Jon B. and Ron Isley and Burt Bacharach.

Earlier this year Walker was named Radio & Records’ urban promotion executive of the year for 2002. In 1999, she became president of the National Assn. of Black Female Executives in Music & Entertainment.