Obsessed with cupcakes? Not as much as Dina Neils. With one oven and a hobby-turned-business, Neils is serving up cupcakes through her newly launched site, Cupcake and the City. Two months ago the 26-year-old debuted her morsels at Mixture – a pool party hosted by MXD Entertainment Group every year at the Red Lion Hotel. She brought five dozen cupcakes to the party, and they were gone in one hour. She started baking with her father when she was very young. His specialty was cakes, but Neils was interested in baking may different desserts. Her focus on cupcakes started after she graduated from California State University, Sacramento with degrees in public relations and journalism in 200