Hello,
It is simple and easy;
You can find a YaST control center (a spaner type icon on the taskbar), click to it to open.
Once opened click the fourth icon (network icon) from left side.
On the right side click Network. It will open for you the network control center for configuration.
There you can see Already configured device (AMD PCnet - FastXXXX) Click to change it, if not found click configure then it will seach for the NIC.
Hope you can get through this.
Regards
Jaipal R
Dubai.