Help with linking images

Ok, I just want to create a simple scrolling section with text and image that can be updated externally using a txt file or XML.
Exactly the same as the news section on this site …
I am curretly using an external txt file to update but want to start adding images below blocks of text? Where do I start? An FLA would be great. But for now why wouldnt this work … for example?

<p>this is a test</p>
<p><img src=""></p>

Do I need to start using XML and are there any basic tutorials on this?

Hope someone can help cos Im not getting anywhere.