Avondale Media today announced that its “iDay 2003” seminar will take place on Friday, July 18 as part of this year’s Macworld CreativePro Conference and Expo. iDay is a fun, informative, full-day seminar devoted to Apple’s iLife programs — iTunes, iPhoto, iMovie, and iDVD — and related third-party products. Jim Heid, Avondale’s editorial director and the author of “The Macintosh iLife,” is the host of the iDay seminar series. Registration for iDay 2003 costs US$99.