**FILE** A shopper leaves a Dollar General store in Nashville, Tenn., in this Nov. 20, 2003 file photo. Dollar General Corp. said Monday, March 12, 2007 its board has agreed to a buyout offer of about $6.9 billion from the private-equity firm Kohlberg Kravis Roberts & Co. in a deal that will take the discount retailer private. (AP Photo/Mark Humphrey, file)