How to setup multiple wireless routers to avoid slowdown from torrent

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http://superuser.com – Currently everyone is connected to a Cisco E1000 wireless n router. Whenever someone uses bittorrent, accessing the internet becomes impossible to the other users. I believe this is due torrent activity filling up the NAT tables. Question: How can we re-structure the network so that there can be a wireless network that will not be affected by the other wireless network that has using bit torrent activity? I was thinking of getting a 4 port gigabit switch, and connecting 2 wireless routers to it. Will this work? Is additional configuration required or simply plugging the 2 routers into the s (HowTos)