I have put a TreeView and an Image control onto a contaniner class and saved it as a class. When I instantiate the container onto a form things work well but if I change the images of the image control, the originally stored images display when the form is run.

I am not sure what you are saying here. Are you saying that you change the Images in the class but that the Images on the form do not reflect the changes you made in the class?

Or are you saying that, even though you change the Images in the instance, that when you instantiate the form it is still displaying the images defined in the class?