Thread:ForrestFighter/@comment-3462718-20111009125457

Type two brackets, the word "thumb", another upright, the word "left", another upright, the word "300px", one more upright, whatever you want the caption of your picture to be, and then two more brackets. . The Result looks like   on the edit area and like this after you hit post. You may have to refresh your screen to get the caption of the picture to show up but otherwise I haven't had any trouble doing it this way yet.

 