A minor problem with images

Hi all,

    I am new to AS3 and flash..

    I have 3 .jpeg images in the working folder.  Now, I need to develop .swf file in such a way that, When I select an item from combo-box, then, the appropriate image should be displayed on output screen dynamically.

   Now, after the image has been displayed, it must display a dot(coloured circle) on the image, where MouseEvent_CLICK event occurs.

For, this, I had worked with static images by convertung them to MovieClips and performing event-handling on them to obtain dots(colored circles).

  **Now, the requirement is to convert an image into movieclip dynamically...

Please help me in this context…
**Thanx in advance…

Srihari.Ch