Photo gallery Using XML and Flash Tutorial Help

I need a little help. I need to use this tutorial (http://www.kirupa.com/developer/mx2004/xml_flash_photogallery.htm) for what i am doing but cant seem to figure out how to do the rest.
So here’s what I am trying to accomplish:

I need to figure out they did this image gallery?
[COLOR=#800080]http://www.kellymoorephotography.com/index2.php[/COLOR]

or something like this that is similar:
[COLOR=#800080]http://www.bludomain.com/photo25/index2.php[/COLOR]

I can’t figure it out.

How do they load in the images, colors, and the resizing the frame.

I want to make it as easy as possible for my dad who is a photographer to manage as possible and if i can, i just want a specific location for him to upload the formatted photos. In three or so separate galleries or folders.

Can somebody help me to learn how to do this?

Thanks!
Austin [COLOR=#888888][/COLOR]