Footwear retail giant Genesco Inc on Wednesday reported increases in both fourth quarter and full-year net sales and earnings and said it expected that trend to continue throughout fiscal 2003. The Tennessee-based company, which operates more than 900 stores across the US, said earnings before discontinued operations, including certain unusual items, were $15.8 million, or $0.61 per diluted share, in the fourth quarter, compared to $12.3m, or $0.49 per share, in the year-ago quarter.