Just give your ISP a ring and ask them, if you don't want to spoof or proxy then you'll have to speak directly to them, or atleast give us some more information on why you would want to change your IP address. I can't think of a single reason, enlighten me.

yeh, most people have a Static IP which means that it stays the same but if you use a program to make it a dynamic IP it changes every time you connect. Can't remember what the program ws called though......... sorry

if u are a windows user then you can do it by using dos command. Though i have not tryed but i think "ipconfig /renew" will work. or just tupe "ipconfig /?" and follow the instrucktion

Why do you have to change your IP? A good reason would make it clearer.

If you have a static IP then you should contact your ISP to get you a new IP.

If you have a dynamic IP or on a PPoE type then just reconnect/redial and you're done.

Most ISP's won't let you change IP unless you can justify the your reasons. (eg. DDOSed)

Not sure why you would want to change your IP address. I have a dynamic IP (on dial-up) which changes everytime i connect to the internet (proxy too) however ever so slightly.

If you have a static IP then it is possible to contact your Internet Service Provider if you want to change. However, some people change IP's as a way to abuse certain rules or as a means to bypass a situation by hiding your previous ID so you need a good reason.

Well there are many ways to change you ip or to hide that you are actually connecting to the internet.

Firstly of all there is proxy server as one and most common solution you should just find proxy or do a bit of search on Google and you will get all needed tutorials. Also you need to find good proxy server there are many servers available some of them are or have different level of security so to say you have to find server with at least medium or high as low will pass data about your ISP and your own ip address.

Secondly it depends on your connection to the internet most common ISP's have dynamic IP address which changes each time you connect to the internet so if you have this then you can and you should just disconnect and then reconnect and you'll have brand new ip address.

As third option I would suggest usage of one very common today tool although not completely safe as you might have some problems as it is not known whether servers included have key logger software on them or not. It is called torpark and it is downloadable as a freeware. Eventhough there is hall bunch of software tailor made for ip changing I would suggest this one most because it uses several proxy servers and routes your connection trough them making it almost impossible to trace.

As fourth option I would snuggest using some of the internet page which allows anonymous access however you want be able to log in anywhere as they do not pass cookies around one such page is http://proxify.com/ which uses frames similar thing you see when you make google image search and the page cannot find out your real ip however they can find out that you are using such service and some pages are preventing connections to them trough such service but those are mostly rare and I have found only one.

Just to point out torpark is not an illegal tool and can be used freely without any interference and breaking of law.

Changing your Internet IP address

Modem users

When connecting to the Internet, your ISP will assign your computer an address each time you connect. This means that often each time you connect you'll have a different IP address. If you're wanting to change your IP address, try disconnecting and reconnecting.

Broadband users

Almost all broadband service providers will assign your computer or home network a static IP address. If you're connected to a broadband network and need to change your IP address we suggest contacting your broadband provider.

Changing your home network IP address
Microsoft Windows users

To change or specify the IP address of your computer for your own local area network (LAN), follow the below steps. Keep in mind that if you're connecting to the Internet with a broadband connection, adjusting your network settings may cause issues with your broadband connection. Finally, if your home network is setup through a network router, that router could be assigning your computer dynamic IP addresses, and specifying a static IP address may cause issues.

Get to the Microsoft Windows desktop.
Right-click on My Network Places or Network Neighborhood and click Properties.
Right-click on Local Area Connection and click Properties.
Click Internet Protocol (TCP/IP) and click Properties. If this is not present, you'll need to install this protocol.
In the Internet Protocol (TCP/IP) Properties window, select "Use the following IP address" if not already selected and specify the new IP address you wish to use. While entering this data you'll also need to specify the subnet mask and default gateway.
Linux users

The below information is for how to specify and adjust your network settings through the command prompt. Changing your network settings will require root access.

Get to the command prompt.
Move to the /etc/sysconfig/network directory.
Edit the interfaces file and adjust your network settings in this file.
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Yes you could always use a web proxy, but most ISP's will release your IP address if you turn of your modem for 5 to 10 minutes, and turn it back on to request a new IP.

Well this is of course true however internet service provider has to assign dynamic internet protocol (that is IP ) to the person so that he could change I remember before some 7 or eight years I had similar problem but we had static ip's that is anyone calling from certain telephone station would recieve static ip and we used some sort of software in connection with this so that if there are several users we wouldn't steal each other traffic and data.

very stupid network organization I still don't know why did they do this in such uncommon way.

And in fact if you have dynamic IP then you don't have to wait just disconnect and then reconnect and you will have new IP but remember that if you happen to have dynamic IP they are also limited so after time your ip will repeat.