Randomly loading images into stage thro action Script?

Hi Friends,

               I am new to this group. I have a query  here. I would like to create a movie clip in flash for my website. In that movie clip, one symbol(which is the series of 5 to 6 image files), will just move across. Whenever the movie runs, it should get 5 different image files and perform the motion tween. i need to know how to get 5 images randomly from a folder into stage using action script. Can anyone give me an idea???

Regards,

Basky