Can't get wireless working on 12.10 and Dell latitude d630

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http://askubuntu.com – Yes, I've looked at several other posts, and other sites trying to figure out what's up, but I've followed the steps, and had no success. Note that I'm a relative newbie to setting up wireless on Ubuntu, so please feel free to suggest dumb errors like "is it on", I very likely missed something fundamental. Output from a couple of commands: $ lspci | grep 0c:00.0 Network controller: Broadcom Corporation BCM4311 802.11a/b/g (rev 01) $ iwconfig lo no wireless extensions. eth0 no wireless extensions. Additional Drivers says "Using Broadcom 802.11 Linux STA (HowTos)