I know i have seen an example of this before but i just can't find it!

What i am trying to do is have a picturebox with about 4 pictureboxes inside and by clicking a button labelled left it will move all pictures left by one and so on like a loop.

pic1 pic2 pic3 pic4 these pictures are inside a picturebox

pic2 pic3 pic4 pic1 click left command button and do this

pic3 pic4 pic1 pic2 clicked again..

pic4 pic1 pic2 pic3 again..

pic1 pic2 pic3 pic4 and so on.. in a loop

can anyone help me do this or know where the example is

thanks in advance