Anyway to modify the fileImporter to handle non-local files?

I'm attempting to create pages programmatically by dumping all of components of a page/collection to an xml "feed" (which then is accessed by another c5 site to essentially create duplicates). My only hang up so far are images/files that are part of the page on the central/master site. I can get all of the paths into my XML file, however, when I attempt to import these files I get an error, which I believe is because I'm attempting to import files from a different server.

Any ideas on this?

Thanks.