When you click on Systemconfig -> LAN,WLAN, can you choose a device wlan0:? If not - first open a terminal and load the driver for your chip:
or
Again Systemconfig -> LAN,WLAN - wlan0: now there?
Then your card needs a special firmware to work - look at this site:
linuxwireless.org/en/users/Drivers/b43#firmware_installation
Copy the firmware as described to /lib/firmware and then it should work
Greetings