A former Chief Information Officer (CIO) at industry leader Hewlett-Packard (HP) has answered the alluring call of an Internet start-up. Mei-lin Cheng, a 25-year HP veteran, has signed-on to become the new Chief Technology Officer (CTO) and Vice President of Engineering for WineryExchange.com, the premier online global business-to-business marketplace for wine growers, wineries, suppliers and retailers.