I don't yet know what this thread's about, but this looks interesting:
Seems to be a "Dreambox" with a Linux PPC OS on it. Maybe this is what the OP has? I haven't read all about it, but it has ethernet capability, so I presume you would control the thing via ethernet? In which case, you'd need what, a video-player application like VLC, for the PC connected to that box? Or does the PC run Windows? Or do you need firmware or software to actually install or run in the box itself? If so, why?
I'm sorry, but I still don't understand what the question is.