OpenCart Setup / Install

Hello - I was wondering if there is any documentation out there for installing with OpenCart.

My client has asked that I install ShipRush into his ecommerce store. I have gotten the all the files download and honestly i am just guessing at this point. But i have tried a few things.

I have placed all the ShippingZ files into the root directory on the server.

I have ran the file ShippingZOpencartBootstrap.php and fixed the PDO issue.

After running the ShippingZOpencart.php file i realized that i need to edit the ShippingZSettings.php.

I have done the steps in ShippingZSettings.php and edited the line to be

define("SHIPPING_ACCESS_TOKEN","Thacrube6tEDRedAPh 2MaDRacr6cETh");

now when i run ShippingZOpencart.php i am getting an xml response with this...

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<Error>
<Code>1</Code>
<Description>
Authentication failed. Invalid shipping_access_token specified.
</Description>
<Version>3.0.6.7128</Version>
</Error>

I am sort of lost and no idea if i am close to getting it to work or way off here. Any help on the proper steps to setting this up with OpenCart would be awesome!

Thanks,
T