Switching Images

I’m looking to do something in Flash where an image will be displayed in a certain way. I’m not sure how possible it would be. I was thinking that it would be cool to dynamiclly load an image. So, what I want to know how to do, if it’s possible, is put an image in, and then when I switch out the image on my webspace, it also changes in my flash document. Anyone know how I can do this, or would I have to edit and upload manually??