Primary Stages (Casey Childs, Founder & Exec Prod; Andrew Leynse, Artistic Dir; Elliot Fox, Managing Dir) has announced that their annual Gala will take place Mon Nov 11at The Edison Ballroom (240 W. 47th St). The event will honor playwright Christopher Durang and President of the General Counsel at Dramatists Play Service, Stephen Sultan. The Gala Chairs are Catherine Adler and HBO. Kristine Nielsen will offer a tribute to Mr. Durang. John Patrick Shanley will offer a tribute to Mr Sultan. The evening will feature performances by Rachel DeBenedet, Alan Paul, Michele Ragusa & Alton F White. For more information or to purchase tickets, call 840-9705 or visit primarystages.org/gala. Press contact: Brett Oberman/Keith Sherman & Assoc (764-7900)...