During summer, I cant get comcast internet thru the home run cable in the attic and have to move the modem downstairs where it works. I have everything upstairs like a network printer, network drive, computers etc. How do I connect these wired devices to the modem/wireless N rounter downstairs? PCs are fine (can buy wireless adapters) but how will printer/network drive be connected to the wireless network? Wonder if there is a wireless switch! I don't want to run cables thru the house.