New Post: Get just the list of category on the first display

Hello Geoff...
I created a page , ('Categories'), I putted the category module pointing to the store (where the products are).
Clicking on a category image or text link directs to the correct products.
If I click then on the 'Categories' link on the main menù, when I reach the page 'Categories', i see an empty page (all categories not showing)...
i.e. when you try to reach the 'categories' page from the "http://mysite.com/Store/tabid/XX/CatID/5/Pencils.aspx" , you'll find an empty page;
from 'Store' page, you'll find a populated 'categories' page...
what am i missing?

thank you for your suggestions :)