[ic] Stumped!

[Spinn A Web.com]

Here is my situation:

I have a website hosted on a server that has Akopia Interchange on it as the
shopping cart software.  I love the admin interface and the ease of adding
products, changing products and everything else the Admin section allows.

Heres my question:

I want to create my own online web-store using this software but do not have
access directly to the Linux server to do the programming as stated in all
of the downloadable PDF's for set-up, install, etc.  I am very well versed
in HTML programming and have been picking apart the 'Construct Something'
templates and files to see how all the information comes together on the
website.  Know this, how much can I do by only having access (Admin & FTP
(to get the template files, etc)) to these two areas and not the Linux
server directly?  I was doing pretty good up until I tested an order and it
came back with an internal error.

Any help will be appreciated.

Brandee Diggs