Loading unknown # of photos into an array

I have a number of photos that I want to load into an array, ie photo0.jpg, photo1.jpg, photo2.jpg, etc.

I can I load all photos into an array if I don’t know how many photos there are?

in other words, how can I code the movie so flash will add all photos in a folder into the array, not knowing how many there are, without changing flash code?

Hope this is clear…

thanks