Broadcasting wireless internet and network.

On the torrenting front, you can also go with an option where you keep those computers dealing with large amounts of traffic wired to the main router while you allow for wireless connections on those computers you just use for irregular surfing. That said, second the firmware flashable router recommendation and would suggest Tomato Firmware as a potential replacement, since I've used it and was very happy with the configuration and control options. Limit the amount of upload bandwidth the non-wireless lines can steal, as that's usually the choke factor for torrent use.

Whatever you do though, remember to lock down the access. The number of unconfigured points in range of me named "linksys", "netgear", or "belkin54g" with default pswd's is always a laugh.

Jam it back in, in the dark.