How to add secondary IP address to a SuSE box?

Hello, I am converting one of our Domino servers fro NT4 to SuSE 8.2. Is there any way to add a secondary IP to the network card? I used to have such a setup for the current NT box and eve tried this config with Mandrake but thi sdoes not seem to be possible with YAST2. Any idea anybody? Thanks Josef Prusa