I've created a custom main page (by commenting out all elements except the footer) using an image with links to the 4 categories in my catalog.

I'd like to take this one step further by having the links from my main page link to another single image with links before going to my cataloge (either that or a large single image between the sideboxes and the user could use the categories sidebox to navigate).

My site can be found at http://www.imagocollections.com.au

Any help on achieving this would be really appreciated. I'm selling designer clothing so image is fairly important - most of the designer clothing sites have at least two levels of images before you reach their catalog.