CLEVELAND, Ohio -- After conducting customer interviews to better understand their financial needs, National City says it is making a series of changes to simplify small business banking.The product enhancements include:Free small business checking: The 150 transaction items included at no charge is increased to 200.Small business preferred checking: The 250 checks/withdrawals (debits) and 250 deposited items (credits) at no charge will become 400 combined transaction items free. Free online bill payment and free online tax payments also have been added. Business sweep checking: The 250 checks/withdrawals (debits) and 250 deposited items (credits) at no charge will become 500 combined transaction items free. Other recent enhancements include free online statements and online check images with Small Business Online Banking. www.NationalCity.com."