Virgins Meet in Sin City, Tout Abstinence By CHRISTINA ALMEIDA The Associated Press Sunday, June 29, 2003; 7:54 AM LAS VEGAS - In a city known more for sin than virtue, a group of virgins from around the country gathered this weekend to send a message: wait until marriage. It was a clash of the "Good Girls" and the sin-seekers as about 200 teens, parents and youth counselors descended on the Strip to pass out cards promoting abstinence. "What better place to bring this than Sin City?" said participant Deanna Grimm, 24, of Sioux Falls, S.D. "They need to hear...