change MAC address of eth0 in suse9?

How do i change the MAC of an RTL8139-card?? I have tried with adding: LLADDR='00:02:E8:90:63:7A' in /etc/sysconfig/network/ifcfg-eth0 Found it in ifcfg.template. Not enough, it did not change. Could sombody help me out pls? If this hw is run with winxp(lode) it is possible. TIA Leen