how to change IP address?

This is from http://whatismyipaddress.com/ This is Windows XP Click on "Start" in the bottom left hand corner of screen. Click on "Run". Type in "cmd" and hit Okay. You should now be at an MSDOS prompt screen. Type "ipconfig /release" and hit "Enter". This will disable your internet connection. To undo it, type "ipconfig /renew". Type "exit" and leave the prompt. Right-click on "Network Places" or "My Network Places" on your desktop. Click on "Properties". You should now be on a screen with something titled "Local Area Connection", or something close to that, and, if you have a network hooked up, all of your other networks. Right-click on "Local Area Connection" and click "Properties". Double-click on the "Internet Protocol (TCP/IP)" from the list under the "General" tab. Click on "Use the following IP address" under the "General" tab. Create an IP address. (It doesn't matter what it is.) Press "Tab" and it should automatically fill in the "Subnet Mask" section with default numbers. Click the "Ok" button. Click the "Ok" button. You should now be back to the "Local Area Connection" screen. Right-click back on "Local Area Connection" and go to properties again. Go back to the "TCP/IP" settings. Select "Obtain an IP address automatically". Click the "Ok" button. Click the "Ok" button. You now have a new IP address For Windows vista/windows 7 Click "Start Click on/point at "All Programs". Expand the Accessories menu In the Accessories menu, Right Click "Command Prompt" and click on "Run as...". Choose "administrator". Click "ok". Type "ipconfig /release" and hit enter.This will disable your internet connection.To undo,type "ipconfig/renew". Click "Start", "Control Panel", and open "Network and Sharing Center". Depending on your view, you may have to click Network and Internet before you see the Network and Sharing Center icon. From the Tasks menu on the left, choose "Manage Network Connections". Find and Right click on the active "Local Area Connection" and choose "Properties".(If you’re hit with a UAC prompt, choose Continue). Double-click on "Internet Protocol Version 4 (TCP/IPv4)". Click on "Use the following IP address Enter a false IP like 123.123.123.123 Press Tab and the 'Subnet Mask' section will populate with default numbers. Hit "OK" twice. Right click the active "Local Area Connection" again and choose "Properties". Double-click on "Internet Protocol Version 4 (TCP/IPv4)". Choose "Obtain an IP address automatically". Hit "OK" twice.

Check out http://www.youtube.com/watch?v=mughQp-lFPA for the answer to your question.

Follow the steps below to change your ip address: Click Start -> Control Panel 2.Left click on Network and Internet and then choose Network and Sharing Center On the left side choose Change adapter settings Right click on your network card and from the drop-down choose Properties Under the Networking tab Choose Internet Protocol Version 4 (TCP/IPv4) or Internet Protocol Version 6 (TCP/IPv6) and then click on Properties 7.In next window you have an option between Obtain an IP Address Automatically and Use the following IP Address 8.You need to select Obtain an IP Address Automatically to change IP address automatically 9.Finally click on OK and your IP address should be changed To check whether a new ip address is assigned or not by using the following command : Start->run->cmd->ipconfig/ipconfig/all To get your external/static ip use the link http://www.ip-details.com/ .