This simple contribution is meant to show the main categories (top level only) in a box in the front page of the shop with pictures and title text.
Here I positioned it immedialy after the title and before the Text_Main.
It is simple and you will have a sophisticated first page to look at...
You have an example in www.moldsandmoulds.com (this page have other heavy modifications but you can clearly see how the categories look like on it).
As this contribution is originally built from the new products file in the same modules section, the number of category displayed is the same number for the number of new products displayed.
Credit goes to the OSCommerce guys, as they already did most of the effort, and I am not a programmer!!!