I have a Netgear WG511T which uses an Atheros chip. Upgrading from SuSE 9.0 to 9.1, it detected my card and installed the appropriate driver. Just pay attention to your firewall settings; otherwise using this card works just fine.
Before you switch for good, I'd tell you to try downloading the madwifi drivers first http://madwifi.sf.net
and try to get it to work that way. SuSE uses those drivers for my card.