On MTV’s San Francisco segment of The Real World, Pedro Zamora’s HIV-positive status was somewhat overshadowed by the antics of a certain bike messenger. But Zamora, who died this past winter from AIDS-related complications, has a posthumous ally in former Real World housemate Pam Ling (the Asian-American woman with the distinctive red-streaked ‘do). Ling, a University of California med student specializing in AIDS research, will discuss Zamora and AIDS issues in “Love, Sex, and AIDS in The Real World.” Ask her when she finds time to study when she appears at 9 p.m. at George Washington University’s Funger Hall, Room 108, 22nd & G Sts. NW. FREE. (202) 994-8000. (Nathalie op de Beeck)