I assume you have Cat5e running through the walls to jacks in the room?
If you want a quick way to get internet there again, powerline adapters might be worth a shot: Amazon.com: Zyxel 600 Mbps Mini Powerline AV2 Gigabit Adapter, Starter Kit - 2 Units (PLA5205KIT): Computers & Accessories. They can perform better than wireless if there are lots of walls/interference
