Do "lspci -v" and if it lists an ethernet controller with the Atheros chipset, then please consider using madwifi. It is written for Linux, rather than simply enabling the Windows drivers that come with the card. The docs and a link to download for madwifi are at:
http://madwifi.org/wiki/UserDocs
One problem that I found with the madwifi docs was that they weren't emphatic enough about the need to issue an "iwpriv" for an encrypted (WEP, etc) connection. It's in there, but you might miss it.
