Background/wallpaper website

hi i was interested in making a background/wallpaper website so that i can offer some of the backgrounds that i make and others on my website, but i was looking for a module or something, that would allow me to make a backgrounds section and post backgrounds in it, and then make subfolders in the directory that the backgrounds would be in the site and allow them to be organized..

here is an example of the type of site that i am looking to make: http://www.fantom-xp.com (this is not my site)
.. thx