Here are some more good links for grant writers. 

Publications and Products
This U.S. Department of Education Web site provides a wealth of information for teachers, administrators, policymakers, researchers, parents, and students.
http://www.ed.gov/about/pubs.jsp

Federal Register Documents Announcements Application Notices Requests for Comment etc.

This site offers up-to-the-minute information on grants provided by federal government agencies, including the Department of Education.
http://www.ed.gov/legislation/FedRegister/announcements/index.html

US Dept. of Education Grants Forecast FY 2010
This site forecasts prospective funds allocated by the federal government.
http://www2.ed.gov/fund/grant/find/edlite-forecast.html

National Science Foundation (NSF) 
Opportunities for mathematics and science grants may be found on this site.
http://www.nsf.gov/

Welcome to Schools and Libraries (E-Rate)
Library systems, school districts and non-public schools can apply for discounts on telecommunications at this site.
http://www.sl.universalservice.org