I live in Norway, this is like the first installment of fiber optic connections in the country, and I receive TV signals through the same "home center", so I don't think I'd be able to replace it.
What I've tried thus far is to just set the UPnP-enabled DIR-655 as DMZ host and connect all the devices through it, but with no greater luck.
Thanks helping by the way, I really appreciate it =)