Welcome to LQ depdiver. The first thing I'd check is that the necessary kernel module is being loaded. I've got the same kind of card and if I remember correctly the module name is something like 3c59x. As root, run the following command and you should see "3c59x" listed in the output
If it is not there, you can load it manually via the insmod or modprobe commands. Please see the man pages for more info. Good luck with it -- J.W.