I searched on this forum for a procedure to install the driver for the listed antenna on Ubuntu 11.10. It produced a few warnings during "make", but installed without issue. I rebooted, then ran this command:

sudo lshw -C network

And this was the output...
my two listed devices were:

BCM4322 802.11a/b/g/n Wireless LAN controller (eth1)
NetXtreme BCM5764M Gigabit Ethernet PCIe (ra0)

are one of these the device? What else can I do?