Fifty-one kids left standing at the Scripps National Spelling Bee are set to try to tackle words most Americans never heard of, never mind spell. Today is the final round. The Spelling Bee began yesterday with 273 hopefuls, including 14 from foreign countries. Of the remaining spellers, one is from Canada and another's from Jamaica. Most of the finalists have competed in the contest before, and a-half dozen are home-schooled. One student from Kentucky says he'll just do the best he can. Another from Texas said after yesterday's round his goal was to get some rest "and then review some words."