Signature Picture
Go to your profile (just below the board logo) and click it open.
Go to the Signature box near the bottom of the page. Put the cursor where you want to have your picture in the signature area.
hit the Img button; you'll see it paste the
Find the photo you want to use (it needs to be less than 150KB in size) out of your photo album, right click you mouse to get to its properties.
Copy the properties address, highlight and hit Control C; close that window. Go back to the signature box; paste the address properties into the signature box, then hit the Img button again.
Save your profile and it will appear in all of your posts, even the ones you have already put on the board