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If you are using ICS, the host IP should be set to 192.168.0.1. On the client machine, use 192.168.0.2 as the IP address and 192.168.0.1 (IP of the host) as the gateway.
I am unfamiliar with SuSe (running FreeBSD and Debian here), but I'm sure you can find a graphical tool for setting up the network (in KDE or Gnome). If not, the good ole ifconfig and route commands should do the trick:
/sbin/ifconfig eth0 192.168.0.2 broadcast 192.168.0.255 netmask 255.255.255.0 up
/sbin/route add default gw 192.168.0.1
In the commands above I am assuming that your network interface is "eth0" and that you will be using the IPs mentioned before.
Please note that using ifconfig and route you get a connection for this session only: after reboot you have to set up the connection again. Using ifconfig and route is a quick way to figure out if the connection can be established and if it's working. If yes (you can ping the host and ping a public IP, ie. 188.8.131.52) then you can move on to making those settings stick and the connection established automagically after every boot.
Using the GUI network setup tools you will be making permanent settings and there usually is an option to bring the connection up after every boot.
Let us know how it goes.