okay, run three ethernet rj45 cables to your pcs and playstation. Then for a printer you would need a print server to connec tot your router. But that is not needed as you can connect your printer to either on of the pcs and use that as the print server, but that pc has to be switched on for the printer to work. Then just run the network setup wizard and there you go. I have exactly the same router as you so its okay. connected two pcs to my network and printer to one pc and i can share it straight off.