Please Help with Importing Module with Joomla

we are using MijoShop with Joomla, and have import module that imports the products from a XML feed

it works perfectly except for one thing because the description in our feed is located within a HTML file

it is importing the actual URL or the description. we need it to retrieve the data from the file and import it

i was wondering if anyone can help and quote us if need be

i can provide more info if needed

thanks