Basically you want to mount the XP drive on your FC5 box. That would allow FC to see the files, just like they were copied over. That said, I don't have any experience in mounting remote NTFS drives on a Linux box although I would bet that it would be done through Samba. I did find this howto
by doing a little googling.
Since this is more of a general networking question than a wireless one, I'm going to ask the mods to move the thread and hopefully someone who has done this will see it.