http://www.petersons.com - Register for a free CollegeQuest account to build and compare a list of colleges. This site also contains links to career advice and articles on finding the right mix of colleges.
http://www.collegeboard.org - In addition to online registration for the SAT I & II exams, this site provides valuable information about the SAT questions, advice on selecting colleges, careers, financial aid and more.
http://www.collegeview.com - Has a database of 3,300 two-and four-year colleges with multimedia tours. Offers college search, online virtual tours and financial aid information.
Sites that help with choosing a college major:
Big Future, The Princeton Review, College Majors 101