At first glance, you might think Bob Miglani comes from a pharma family. He and both of his younger sisters began their careers as sales reps after college. But behind their success in big business lie formative experiences at the Dairy Queen stores owned by their uncle and parents, who are immigrants from India. Even today, Miglani, whose fulltime job is in Pfizer's public affairs department, spends some weekends serving cones at the family business. In his new book, Treat Your Customers: Thirty Lessons on Service and Sales That I Learned at My Family's Dairy Queen Store (Hyperion, 2006), Miglani, 36, shares the core values that work in small business and corporate America.