The above means of binding IP addresses to a single NIC are good with a few exceptions. eth0:0 is the first usable one.
The second point is that those created IP addresses are only good untilo you reboot.
If you are using redhat, create separate files for
/etc/sysconfig/network-scripts/ifcfg-eth0 ifcfg-eth0:0 and ifcfg-eth0:1 etc
If you are using debian based, then the file to edit is /etc/network/interfaces