Click on "Post Reply"
Click on the "paper clip" at the top of the reply
When the light blue box comes up click on "browse"
You will have to find your picture at this point
Let me assume you are keeping it in the library under the "Pictures" folder
Click on "Pictures" under the "Libraries" folder
Double click on the picture you want to post
Click "Upload" along side the url of your picture now appearing on the blue page, this may take some time
Now click "Submit Reply" on the bottom of the page.
No, these are not our dogs. Sample picture only.....