how to reset the network IP address from terminal/command line in Mac OSX?

how about a GUI, ever heard of a GUI? it's this really neat thing, where you don't have to worry about remembering long strings of text to do something. Mac OS X actually has a rather decent one (that was sarcasm by the way, Mac is the best) you could have it done in like 30 sec, if you use the network pane of system preferences.

networksetup -setmanual <networkservice> <ip> <subnet> <router>

Sets the <networkservice> TCP/IP configuration to manual with IP address set to ip, Subnet Mask set to subnet, and Router address set to router.

Sorry, the full path is:

/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Support/netw orksetup