In a nod to the Live 8 rock benefit generation, maybe to meet U2 frontman Bono or perhaps just because she is on summer vacation, first daughter Jenna Bush is accompanying her parents to the Group of Eight summit in Scotland and is wowing the Europeans. "The girls are not there to do anything official," a White House spokesman said yesterday, speaking of Jenna and Barbara Bush, 23, who will join first lady Laura Bush on an educational trip to Africa later this week. Nevertheless, the blond first daughter, who has become the object of fascination among the VIPs, was...