An exhibition about the country's longest-running professional theatre - Wellington's Downstage - is about to open this week. The theatre closed down just before what would have been its 50th anniversary. But the show, Standing Ovation, is also a window into the future of exhibitions. It harnesses the high-tech skills of Victoria University students to create it. But will virtual and augmented reality ever be as powerful as seeing the real thing? Lynn Freeman talks to Peter Rowlands of the National Library, who is heading the ambitious project.