CALENDAR OF EVENTS Th Detroit Alumn e Chap­ ter of D I a Sigma Th ta Sorority, I nco presents J bberwo '93- "The Best of Detroit" Benefit gala at 4 p. m. t The Roostertail. The gala Will feature performances by the finalists of the talent search, live music, Silent auction, live auc­ tion, food stations, and dancing. Tic ets are 50. For ticket infor­ mation call 553-3352. :1 Detroit's Eastern Mar1