Here's a link to the US Airways Promotion, which I found on the "News and Offers" section of the US Airways web site:
http://www.usairways.com/dividendmiles/6549.htm .
Terms and Conditions: Only valid for residents of Georgia or Ohio. Registration is required once prior to departure to qualify. Retroactive credit will not be given prior to registration. Earn 1,500 bonus miles for each paid, qualifying flight to or from Akron/Canton, OH (CAK), Athens, GA (AHN), Atlanta, GA (ATL), Augusta, GA (AGS), Cincinnati, OH (CVG), Cleveland, OH (CLE), Columbus, OH (CMH), Dayton, OH (DAY) and Toledo, OH (TOL) between May 11, 2005 and July 31, 2005 on US Airways or US Airways Express. Purchase and fly one qualifying segment as outlined above and earn Silver Preferred status through February 28, 2006. Offer is not valid on codeshare flights operated by airline partners such as United Airlines. Bonus miles do not count toward Preferred status. Offer cannot be combined with any other bonus-mile offers or promotions, except for online booking bonuses for purchases at usairways.com. All Dividend Miles terms and conditions apply.