Other way to change your ip address

Here is the way that I change my IP when I need to:
1) start->run, regedit
2) go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet
3) ctrl+f and type in part of the name of your ethernet card, for ex. broadcom
4) press f3 to traverse through the search results until you find your ethernet card settings depicted in the registry
5) right click in the white area on the right and create a new string value
6) type in some 12 digit value, and hit ok
7) disable/reenable your ethernet card via device manager or network connections to get a new IP