Loading a LONG list with images

[Dan Friedman]

Does anyone have any answers to the issue of loading a long list with images so that it loads images "as needed" like a webpage does.

I have a DataGrid with several hundred rows.  Each row has a specific image that is to be displayed with that row (like a list of songs).  The image is loaded from the web.   Is there a method to load the DataGrid and only load the images for the rows that are shown?   And, when you scroll the grid, the images for the newly shown rows are then loaded.  The loading need to happen somehow without halting the scrolling or making it stutter. 

I hope that makes sense!
-Dan