That's not going to help him J65nko, the
bwi(4) driver only works for rev 3 chipsets.
For the longest time these devices were attached as bwi(4), leading to the impression that they worked.. this was fixed a few releases ago.
Unless you can replace this device (..MiniPCI/PCI-E), your only option is a USB device.. many of the
run(4) devices are smaller than a thumb drive, always an option.
Good luck, you can post your dmesg as an attachment.