Less than five months after joining DDB/Chicago from Y&R/New York, Jim Ferguson has stepped down at DDB. Ferguson, who held the title of EVP-creative consultant on the McDonald's business during his brief stay in Chicago, is expected to take on the role of chairman and chief creative officer at Temerlin McClain in Irving, Tex., this fall. ... Bill Fortney, former executive producer at Mad River Post, has joined Avenue Edit's Santa Monica office as executive producer. ... Michael Capton, formerly of In Sight Pix, has joined L.A.'s Zoic Studios as head of CG for the company's commercials division. ... Radium has promoted Aladino V. Debert to head of CG, overseeing both the L.A. and San Francisco offices. Debert was formerly CG supervisor at Radium/L.A. ... Freelancer Susan Harris has joined Santa Monica production and design company V12 as a producer.