Help raise money for children and adults in Africa

Hello! My name is Cassy Dowler and I am writing to you because I am currently making a commercial in my high school broadcast class. The commercial I am making is for a week long event that my school holds to help raise money for children and adults in Africa. The week is called "Africa Awareness Week". In the past the week has been a great success and many people have been more than willing to donate to the cause. In conclusion I was hoping to get permission to use some of the pictures on your website in my one minute commercial. The pictures would only be used for the commercial. I hope that you will consider this.... it is truly for a good cause and will only improve the commercial. If you could get back to me asap that would be wonderful. Thank you so very much for your time.
Sincerely, Cassy Dowler