The Maine Community College System is sponsoring a half-day conference for policy-makers, education officials, business leaders and others on models and approaches being used by states to nurture and support entrepreneurs. The event, called Entrepreneurship: the Spirit of Maine, will be held from 8 a.m. to 12:30 p.m. Friday, April 8, at Kennebec Valley Community College in Fairfield. To attend, register online at www.mccs.me.edu, or call Marcia Schools at 629-4000