For those that are interested, I have attached the file which the extension uses:
In the root you will find package.xml and the folder EE_Barlcays-0.1.8
package.xml - This explains the directorys that the files in the EE_Barclays folder need to be uploaded to.
Opening EE_Baclays folder you will see:
This folder will go in the following location:
I think this file is used to upload to the magento database, but I am not sure where because this was done when installing through Magento Connect which broke my version due it being incompatible.
Note: There is also other data that is added to the database that I am unable to explain properly, but I know that it relates to core_config/core_resource tables etc
This folder is the folder that is within:
and within there you have config.xml and form.phtml
This file EE_Barclays.xml in this folder will go in the following location:
EPDQ then becomes available in the Payment Method tab under System->Configuration in the Admin Panel.
I have not had chance to test the front end as our EPDQ application has not been completed yet, but I hope this helps!