You might say that entrepreneur Alan E. Hall lives in two business worlds. Don’t complain to him how challenging it is to grow a business in today’s fragile economy. He knows those struggles firsthand as a business owner. He also knows how next-to-impossible it is for startup business owners to find financial backers. Hall is a player in the venture capital sector as well. He is the founder and chairman of MarketStar, a $4 billion sales outsourcing company that is part of Omnicom.