Bob D...to post a pic:
In the reply window where you type a reply to a message, scroll down and you will see the "additional options" under it. There you will see a button that says "Manage attachments". Click on that and another window will pop up with the word "Browse". Click on that button and find where your pictures are located at on your computer. Double click on one of the pictures. It will then put the name of the picture into the attachment window. Then in the attachment window, click on "Upload Pictures". After you hit the "Submit repliy" and come back to where you can read the threads, your pictures will be in that thread.