http://modxcms.com/forums/index.php/topic,20112.0.html
I think this is what you want. At least a part of what you want
For now I am displaying the images on the home page inside an article list.(Title, Introtext and Image)
For displaying the image on the it’s own page I think you can use the same template variable used on the first page
on the first page put this chunk
<div class="newsItem">
[+img_news+]
<a href="[~[+id+]~]">[+title+]</a>
<p>[+introtext+]</p>
</div>
On the content page template just add the same TV used for the image [*img_news*] (Input Type: Image, Widget: Image)
Let me know if the same image is displayed
I am still investigating the possibility to specify the maximum width, height on the image. I think it might be possible to do it using the Input Option Values: but I haven’t got the time to investigate