It's the WPC54G PCMCIA-Card you use? What is the name of the driver Linux is using in the moment? You should see this in Yast. In my opinion it should be the driver ath_pci.
If driver is not on SuSE-CD then try to get the MADWIFI-driver from the internet.
In the basic installation of Linux you should have the hotplug feature switched on. That means that Linux realizes automatically when new hardware is pluged. You can see whether it is or not with Yast.
O.k. If you pluged the card restart PC and then look into Yast as root.
Then you should see in network card as available WLAN. Choose it and click "wireless". Click PCMCIA "on". Now the new connection should be called "wlan0". The rest of installation I would make with the batch file I told before.
Now, I think you have enough to do for the moment. In Europa it's nearly midnight. Now I have to go to bed.