Put in your briefing file the code;
<p align="center"><img src="montignac.jpg" width="200" height="160"></p>
Where you can align the picture, Left, Right , Center. The file anme of the image, you can only use jpgs in version 1.3 and later, otherwise you must use a paa, or pac. The width and height are in pixels. 200 is as wide as the briefing can fit.