Trouble with Populating the Directory pages

Hello,

I have a question when using categories and sub categories. I have figured out how to add a list to the sub category. When I hover over the categories, it brings up the sub category and then the list. However, when I click on the category or sub-category, it says that nothing is found. For isntance, when going to my site http://www.vegasbrb.com and rolling the cursor over the Vegas Directory, Utilites it brings up both Power/Electric and Gas sub categories. I would also like those two to be listed when clicking on the utilies tab. Another example would be when I click on Vegas Directory, the individual categories do not show up.

I hope this makes sense. My apologies if this sounds confusing. Thank you in advance for any advice you can offer.