Meanwhile, Wal-Mart Stores, Bentonville, Ark., and Longs Drug Stores, Walnut Creek, Calif., are committed to installing HP's new Photosmart Studio, an in-store station that lets customers design their own photo merchandise such as albums and calendars, and pick them up one hour later. Longs will put the studios in 100 stores. Wal-Mart will put them in 50 of its Wal-Mart and Sam's Club locations, a decision made after four test units completed a pilot program.