U.S. Sen. John Edwards, D-N.C., continued his traditional annual beach walk here even though he's setting his sights on a higher prize nationwide.The Democratic presidential candidate walked along Wrightsville Beach for an hour Friday, shaking hands with sunbathers as the holiday weekend began. Donna Helledy beamed when Edwards met with her. "I think he's refreshing," said Helledy, who splits her time between southeastern North Carolina and suburban Philadelphia. Edwards has made the beach walk an annual tradition since he won his Senate seat in 1998. Others who do not want him to win the presidency in 2004 received Edwards politely....