After clicking on the "reply to post" button you see the text box come up with a bunch of grey boxes above it. The #15 box on the right side is for image hosting. You can either type in a URL or click the browse buttoon to upload a file from your computer. after you click on the picture click the "Host It" button. Then 3 codes will come up, you need to copy the Image code "Middle Code" into the text box. After that just hit the send button and you will be all set.