Installing the bridge in the other room with a small switch should allow connection of the printer and PC. Some wireless routers can also act as a bridge but there's no way out of this without additional hardware.
I currently have a one bedroom apartment setup where my cable modem and wireless router (WGR614V4) are in the living room. I have both my networked Brother Printer (2070N) and PS3 hardwired to the router, and access with my laptop wirelessly. I'm moving to a two-bedroom setup where this won't be possible. The printer will be moving into a second room with my girlfriend's non wireless desktop. The PS3 will stay in the living room and I hope to add a Roku Netflix player to the mix. So assuming I have just one cable modem in one of the rooms (preferably the living room where it'll be closest to the incoming cable), how can I network the second room? I'm getting dizzy trying to figure out whether I need a second wireless router or a wireless hub, switch, whatever to hardwire the printer and second PC into.