The U.S. Government has an excellent resource for international students thinking about attending a U.S. college or university. The site below offers information about (1) the admissions process, (2) information about paying for college here, including financial aid and scholarships (4) visa requirements and (4) a good explanation of how the US education system differs from other countries.
I highly recommend this as a first stop for ALL international students thinking about coming to the U.S.:
http://educationusa.state.gov/undergrad.htm