373264 oscommerce shirt art switcher

I need to modify my oscommerce t-shirt store to be able to switch different design options. I already have modded my shop to allow six additional images in additional to the main product image in the top right hand corner. I persume it would be easiest to use these and would allow me to easily upload images via easypopulate this way. I also have a color switcher that displays a t-shirt color upon customer selection that displays the product artwork on top of it. If at least one of the six extra image is assigned to a product it should display a tiny thumbnail of the image with a radio button above it. When the customer selects this image via the radio button, it will replace the image that is displayed on the t-shirt on the right side.