Two IP-addresses, one NIC

Is it possible to set up a NIC so that it answers to two different IP-addresses? I have tried to do this through YaST on a SuSE 7.3 system, but when I try adding another line, the device shifts to eth1 by default, instead of letting me choose eth0, which is necessary to get two IP-addresses assigned to the same NIC. Can it be done? Best regards, David List