Experts give a how-to for snagging a star for your event. Wrangling celebrities during award season is much like herding skittish, overly pampered cats. Veteran event organizers must coax stars early and often with the soft purr of endearments, and the scent of a gravy train worth of media coverage. One of the most fraught, yet undocumented rituals of the award season is the sport of celebrity hunting. In-town press agents such as Ronni Chasen, Carol Marshall, Lisa Taback, Michele Robertson and Lea Yardum, among others, can help open the lines of communication between studios, event organizers, celebrity publicists and the media. Sheigh Crabtree reports.