In two weeks, Republicans from around the country will convene in New York to rally in support of President George W. Bush, and to listen to an exuberant 20-year-old named Princella Smith. Smith earned her plane ticket to the Big Apple by authoring the winning entry in MTV's Choose or Lose Stand Up and Holla! essay contest, and she'll deliver her words to the 2004 Republican National Convention next Tuesday. The rural Arkansas native's essay, selected by her peers on ChooseorLose.com from more than 1,000 entries, discusses her support of Bush and his call for young people "to do nothing...