You have your WLAN card built into your computer and you need to use the prism54 driver with it:
kolossus:~ # hwinfo --wlan 20: PCI 202.0: 0282 WLAN controller ... Driver: "prism54" Driver Modules: "prism54" Driver Activation Cmd: "modprobe prism54" ...
How to use it
Load the driver:
I assume your WLAN device is eth1. Check that it works correctly by doing a
iwlist eth1 scanning
If it does not work correctly and you see the following error message in your /var/log/messages:
firmware.sh: cannot find firmware file
Then get the firmware file from the internet (http://www.google.com) and proceed according to the README file. In rare cases you will have to analyze firmware.sh where it searches for the file. To find firmware.sh, use
find -iname "firmware.sh"