Please see the following websites to search for funding sources:

            -www.grants.gov:  Search all federally-funded grant and fellowship opportunities

            -www.cos.com:  Search both federal and private grant and fellowship opportunities

            -www.scangrants.com:  another search for funding, categorized by research topic

            -www.cdc.gov/od/pgo/funding/FOAs.htm:  Centers for Disease Control and Prevention

            -http://grants.nih.gov/grants/guide/index.html:  National Institutes of Health

            -www.samhsa.gov/grants/2009/fy2009.aspx:  SAMHSA (Substance Abuse and Mental Health Services Adminstration)

            -www.hsrd.research.va.gov:  Veteran's Affairs

            -www.hrsa.gov/grants/default.htm:  Health Resources and Services Administration

How to find out if something's already been funded by the NIH:

              CRISP (Computer Retrieval of Information on Scientific Projects):  http://crisp.cit.nih.gov/crisp/crisp_query.generate_screen