Vincent Quan

The high-end department store starts accepting Visa and Mastercard in hopes of attracting a younger, broader customer base. Pedestrians walk past a Neiman Marcus store on the Magnificent Mile March 5, 2009 in Chicago, Ill. (Scott Olson/) Jeremy Hobson: There's a big change happening today at Neiman Marcus. The exclusive department store -- which for years has only accepted American Express, Neiman's own credit card, or cash -- is going mainstream. Marketplace's Jennifer Collins reports. Jennifer Collins: Today, Neiman Marcus department stores start taking Visa and Mastercard. Vincent Quan teaches business at New York's Fashion Institute of Technology. Vincent