[Birgit]

Originally Posted by pauldodman

Well yes, essentially you have 2 websites and two homepages- the first one you come to and then the x-cart one.
So there is the homepage here:
http://www.allterrainmedical.com/
and then another one here:
http://www.allterrainmedical.com/cart/home.php

So basically x-cart lives within the /cart folder.

It is rarely a good idea to have two sites like this - confusing for customers, for search engines, and as you are finding out, difficult to update and maintain.
It is not easy to get the x-cart bits (category columns etc) into the non x-cart parts of the site.
Your best bet would be to do what your designer should have done from the start, and have one, single site, based around x-cart.
If I were you, I'd start making the /home.php page look like the index page - which is perfectly possible.
Then use static pages to recreate your About Us and other such pages.
Then when you have the site built properly in x-cart - get rid of the main site and put x-cart into the root folder. It will pay dividends in the long run.

Dear Paul,

Thank you for confirming my thought and for taking the time to look into our site. I am not a technical person, but this just did not make sense to me. I will ask our SEO company to help me with this change...