Since it seems there are no Linux drivers for this card, your only hope of getting this thing working is NDISwrapper. Just had a look and it seems you are in luck! Someone has gotten your card working in CentOS 5.1 (see entry 58): http://ndiswrapper.sourceforge.net/joomla/index.php?/component/option,com_openwiki/Itemid,33/id,list_a/