I think this card is covered by the bwn driver. I'm not sure if that support was in 8.2, and if it was, you need to manually load the driver using the instructions in section 7.7.7 of the Handbook:
ftp://ftp.pcbsd.org/pub/handbook/9.0...434_1715906691.
Note that this is already done for you in 9.0 and later snapshots so it may be worth while installing one of those, or testing from a 9.0 live DVD first to see if the card works.