One of my students came to me asking how he could protect his girlfriends photos when he uses them for his school project. So I decided to compile some information about that subject here.
How can you prevent copyright infringement?
How do I register my website content?
Another method is to add a watermark and copyright directly in your images.
http://www.blogger-book.com/2007/02/how-to-put-copyright-notice-into-your.html