[TYPO3-shop] Products categories menu

[pftp]

I've been trying to set up tt_products but I can't find any instructions 
on how to set up a multilevel category menu. I managed to get the menu 
to be nested but I can't seem to get the parent categories to display 
the items from the subcategories. The relationship is broken. Can anyone 
help me around this problem. I'm using tt_products with RealURL.
Installed:
tt_products 2.5.4
mbi_products_categories 0.1.1
nsb_cat2menu 0.0.1
typo3 4.1.5
php 5.2.4