Three actors. One desk. Three chairs. Theatre at its most elemental. <i>Seven Interviews</i> offers up seven different short plays, each with an interview format, and each of which illuminates some aspect of the human condition. The seven pieces range from the broadly comic to the achingly tragic. Among the situations set up in the seven pieces are a job interview to replace a secretary who is giving her employer nightmares, a biographer's horrible realization that she doesn't know her subject a