Run this command
ifconfig -a
It'll show you all the interfaces that have been configured by Suse. Normally, you would have eth0 as the first ethernet interface. To configure it:
ifconfig eth0 up <== to bring it up
ifconfig 10.2.45.67 netmask 255.255.0.0 broadcast 10.2.255.255
Default gateway is set by route command
route add default gw 10.1.1.4
Anyhow, you can do all this by Yast. It's a good tool, look under Networking.
HTH,
Nitin