This module lets you attach images to Products attributes so you get a thumbnail preview of the 'Colour' (for example) which the view can click on and it should switch the larger image on the Product Details page.
To add images you first have to get them into the files table somehow. I was using the basic Images module to do mass imports of images. Then 'Edit' a product, you should see a new tab ('Attribute Images' I think it was) which will give you a select list of all the images in the files table from for each attribute.
YOU MUST INSTALL the imagecache module and have a preset called 'thumbnail' which will be used for the thumbnail (duh) on the Product Details page.
For working example see any of the products at: http://melissaaustralia.com.au/shop
This module comes with no support and I'm more than willing for some keen developer to take it up and make it their own (as I have no plans to support it right now).
This is _ABANDONED_ software and is donated to the community.