In Windows, how do I check my computer's IP address?

In Windows XP, 2000, NT, and Vista
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To see what IP address your computer is using:-
•Click Start, and then select All Programs (XP and Vista) or Programs (NT and 2000).
•Select Accessories, and then Command Prompt (2000, XP, and Vista), or Command Prompt (NT).
•At the command prompt, Enter: ipconfig The IP address (or IPv4 address is you are using Windows Vista) will be a series of numbers following the pattern xxx.xxx.xxx.xxx, for example, 156.56.27.32.
•To close the command prompt, enter: exit.

In Windows XP, without using the command prompt
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Alternatively, in Windows XP, to find your IP address using the graphic user interface:
From the START menu, select Control Panel, select . Double-click the Local Area Connection icon. Occasionally, there will be a number on the end (e.g., Local Area Connection 2), depending on your computer's configuration. If you are looking for the IP address for a wireless adapter, the icon will normally be named Wireless Network Connection. Click the Support tab and then click on DETAILS. All the information will be displayed.
The IP address will be listed in the window that appears.

OR simply check the IP address using this link:
http://whatismyipaddress.com/ and refresh the page.

OR download Show MY IP Software using this link:
http://www.topshareware.com/Show-My-IP-Software-transfer-63180.htm