Any ideas how to go about this?

I am building a piece of software that manages employees, and I am working on the code that allows the user to assign an image to an employee.

I am wanting to bring up a selection form with available thumbnails displayed. I don't want to use a open file dialog because a)they only need to select from a single location on the network and b)I don't know if it's possible to force the dialog into thumbnail view.

Is there a way that I can dynamically resize and load the pics into a listview or something similar. Anyone know how to do this or have a better way to achieve this goal.

Any ideas/thoughts are appreciated.