there should be a link button on which ever image sharing site you use when you press that it will spit out a URL copy this then paste it into the box that comes up when you press the pic button (next to the speech box) above the reply window.
Then it will show on the thread.
Makes sure your pic isn't bigger than 800 by 600 or it screws the whole formatting of the board up.
To note if you want to stay annoymous its pretty easy to get the link properties from the image.
Last edited by mad_jock; 20th December 2012 at 10:04.