One of the big highlights of “Rule Britannia! Art, Royalty and Power in the Age of Jamestown,” the new exhibit opening April 28 at the Virginia Museum of Fine Arts, is a portrait of “Virgin Queen” Elizabeth I. The state’s named after her, of course, implying that we haven’t been around. But in 400 years, the commonwealth’s seen some action, all right. Including losing the queen and her dull country, and buying into a nation that would birth the corn dog. The exhibit to commemorate Jamestown’s 400th anniversary features paintings from a time when the state was a little more innocent. It opens April 28 with a talk by Richard Ormond, guest curator, on art, royalty and power in Jamestown at the Virginia Historical Society at 6 p.m. ($3-$5). The exhibit at VMFA runs through Aug. 12. Admission to the exhibit is $6-$8. 340-1400. S