Updating Scroll bar Options

[Sparky_Chr]

I am trying to make a scrolling window that will display archived image files in a folder as text and when the user clicks on the image it displays the image a window next to it.
The problem I am having is I can't figure out out to set up a scrolling window that displays files in a folder that updates the list when new files are added.
Does any one know of good reference material to help me on this? I have looked online for months now, I am not even sure how to search for what I'm looking to do.
Thanks