Wireless NIC - how to set encryption in SuSE Linux?

I am trying to get encryption working with my Netgear MA401 wireless PCMCIA NIC (802.11b, uses the orinoco_cs driver). After fiddling with the /etc/pcmcia/wireless.opts, I come to the conclusion that this is not at all the file, the SuSE Linux 7.3 wireless configuration uses. The card works fine without encryption, but when I set the encryption from the Windows drivers for the card (of course checking that it works under Windows), and try making it work under Linux, I am stuck, since the SuSE configuration is so well hidden. Could someone tell in which file(s) to set the encryption key? Thanks in advance. Best regards, David List