Secretary of State: http://www.in.gov/sos/business/

Physical Address:

302 W. Washington Street
Room E-018
Indianapolis, IN 46204

Contact info:

Corporations Information – Phone: 317-232-6576
Business Services Front Desk – Phone: 317-232-6581
Fax: 317-233-3387

Name search: https://secure.in.gov/sos/bus_service/online_corps/name_search.aspx
Corporation and LLC forms: http://www.in.gov/sos/business/2426.htm 
Filing fees: http://www.in.gov/sos/business/2435.htm 
Online Registration: http://www.in.gov/ai/appfiles/sos-registration/landing.html
Department of Revenue: http://www.in.gov/dor/
Department of Licensing: http://www.in.gov/business.htm