There are many resources that can help you find additional grant and scholarship money. Students and parents should be aware that there are also many less than reputable organizations that make claims about finding financial aid for a fee. In general, be wary of scholarships with an application fee, scholarship matching services that guarantee success, advance-fee loan scams and sales pitches disguised as financial aid "seminars".
For tips on what to look for visit FinAid.org.
Listed here, for your convenience, are some sites that are free to use and can help you find additional financial aid.
Free Scholarship Search Sites
FastWeb Scholarship Search
College Board's FUND FINDER
Sample Search Sites Owned by Education Lenders
Peterson's Award Database - Nelnet
Scholarship Experts - Goal Financial
College Data - 1st Financial Bank USA