There is a better way: the command "netsh" on your command prompt can change all the aforementioned settings, and if you put them in a batch file, you can change them with a double mouse click.
To familiarize yourself with the command, click on "Start/Run" and enter "cmd". The command prompt opens. Enter "netsh /?" and you'll see the options and parameters of this powerful command and its subsets.
Open your network connections folder in the Control Panel. Windows usually calls the Network Interface Card "Local Area Connection" If you want to change the settings of your wireless network settings go to the appropriate status window. Make sure you know the name. Click on it, than click "Properties" and there double-click "Internet Protocol (TCP/IP)" This is where you usually go when you change those settings.
Now open your text editor and create a new file which you will call "Connection_settings_1.bat", or whatever is easily memorable and you associate with your settings # 1. Enter the following code:
CODE
netsh interface ip set address name="Local Area Connection" source=static addr=111.222.333.444 mask=255.255.255.255
netsh interface ip set address name="Local Area Connection" gateway=555.666.777.888 gwmetric=0
netsh interface ip set dns name="Local Area Connection" source=static addr=999.111.222.333
netsh interface ip add dns name = "Local Area Connection" addr = 444.555.666.777
Of course you must enter the numbers if the IP, subnet mask, gateway and DNS Server(s) according to your settings! As most of you know, 111.222.333.444 is just an example of an actually non-existing IP address. Save the file.
Assuming that your connection settings #2 are different, say with DHCP, than create another batch file and name it differently from the first.
CODE
netsh interface ip set address name="Local Area Connection" dhcp
netsh interface ip set dns name="Local Area Connection" dhcp
Save the file. If you need WINS you should enter the code
CODE
netsh interface ip set wins name="Local Area Connection" source=static addr= . . .
at the end of the batch files(s) with the correct settings instead of the dots.
Now test your new batch files. When you double-click on one, a command prompt window opens and the batch file is processed line by line. This takes some time (25 seconds in my case with a 2.8 GH Intel Processor), it is not done instantly. When the processes are finished the window closes.
To check if the settings are applied correctly, open a command prompt and entee "ipconfig". Than double-click on the second batch file and after it is finished put the command prompt where you entered "ipconfig" in focus and enter "ipconfig" again. The settings have changed with one double-click!
A final note: Yes, there is little proggies which do this job as well. One of them is even free. But you can do it without launching any extra program, using the built - in capabilities of your operating system.
curare
Otherwise such works go completely unappreciated. Good one curare - that's the kind of well organized and quality tutorial/post we're always hoping for 
I am stuck at 31,25 points and my guess would be that this howto should be worth another two or three points 
