Through Aug. 31, US Airways Dividend Miles members flying on the Shuttle can earn triple miles that count toward elite status. This is a three-month extension on the previous offer and miles will count toward 2002 elite accrual, which will be valid through February 2004. The Shuttle flies between Boston and New York/ LaGuardia and between New York/LaGuardia and Washington/ National. It is necessary to register for this promotion and you may do so at http://www.usairways.com/ dividendmiles/5236.htm.