To order prints, click on the photos you wish to order, and select the size and quantity. When you are done, click on the "Cart" link at the top of the page. You can order photos anonymously if you are not a Fotki member (or if you are a member, you can order anonymously if you log out). Complete the ordering process. Then wait for your prints to arrive.
If the "order prints" link is not visible to the right of the photo, it is not available for prints.