Yes, it's quite easy. I have all three of our static IPs bound to our SME (since we don't have anything else to use them). /etc/sysconfig/network-scripts/ifcfg-eth1 or ifcfg-eth0 will contain the configuration for your NIC. Just copy it to ifcfg-eth1:0, then change the line in the file that has the IP address. Use ifcfg-eth1:1, ifcfg-eth1:2, ifcfg-eth1:3, etc. to add more addresses. Works great for me on 5.0b4, with no other changes.