It's at the bottom of the page, just like this one when you reply or post. It says "Attach:" and a block for your file name, then "Browse", which means that you go to your picture directory and select one. Additional is covered in "(more attachments)". It is best that you "size" your picture first, say 6 X 8 inches or 432 X 576 at 72 dots per inch. Give it a try.