Calling recent images by php

If I upload one picture with each new post, is there a way I can call the images from the five most recent posts, without having to go back each time to change the code? I’m using jondesign.net’s smooth slideshow, and I would like the images to update as I post new material, but php isn’t my thing (x/html is, lol). I’m just looking for something that basically asks:

<php get (most recent image) ?>
or
<php get (second most recent image) ?>

I know that’s not any kind of real php code, I just used that to show what I’m wanting it to do. Is this possible in WordPress?