Try https://www.cappex.com/ or http://www.fastweb.com/
I also agree with Linda. Your counselor should be able to provide additional resources as well. Best of Luck.
Here are some websites you might try for scholarships and grants.
In addition, talk to your guidance counselor as they have lots of resources to help you in your search.
http://www.collegeboard.org is a website that you will use to register for SAT and look up college information and much more... and it has a section on scholarships and grants.
Also your counsellors at your high school are a great resource. Depending on a school, but my son's high school has a parent-student website that lists these types of information.
My eldest son and I went through this process this past year... it seems like a daunting task but in the end everything will make sense! Best of luck!