Below are some links you will find useful:

http://www.buildingscience.com
 
Maine:
www.mainehousing.org/PROGRAMSHelp.aspx?ProgramID=32
 
New Hampshire:
www.nh.gov/oep/programs/weatherization/index.htm
 
Federal Tax Incentives:
www.energystar.gov/index.cfm?c=products.pr_tax_credits