Writing Your Proposal for Extramural Funding

Preparing Proposal Budgets
Grant-Writing for New Applicants - Focused on NIH applicants, but might have useful tips for other applicants
Proposal Writer's Guide - Univ. of Michigan
Grant-Writing Tips - EPA
Guidelines for Submitting NIJ Applications
NSF Grant Proposal Guide A Guide to NSF Success (Science Magazine, July 27, 2007)
NIH Grants Process Overview
The NIH R01 Toolkit (Science Magazine, July 17, 2007)
Guides and Tip Sheets to the Preparation of NIH Grant Applications
A Sample NIH Grant Application Online