Marketpress Category & child category pages

hey there

I want each product category page to show that category's child categories

Each category would have it's own image

On each category page it should show a grid of all the child categories and their images

Each child category and it's image should link to that category page where all posts in that category will be shown

Preferably this would be done with a plugin so it's totally automatic, rather than having to add shortcodes to pages etc.

How do I do it?