Worldpay and domains

Hello,

Ive been using a single site in opencart for about 4 months or so and it works great, but im looking to expand.

I don't know if any one has tried this before but I'm trying to create a number of sites using opencart.

rather than using the multisite option using subdomains, I've approached it in a different way

Our main domin address will land on a separate web page that links to each of the sites and acts as a menu page, for example the main page is on domian.com and i have 3 open cart sites at domin.com/shoes, domain.com/hats, domain.com/coats.

This way i can specialize and grow each site independently and eventually have seperate admins ect.

I'm tying to use a single worldpay gate way which currently the payment response is set to domian/shoes as this the first one we have been working on and all is working fine.

I wondered if there's was a way to send this response to each relevant site or a mod that needs to be created to send the worldpay payment response to each of the / addresses. rather than setting up separate gateways.

can anyone offer advice or help?