To change your system IP (Internet Protocol address ) in windows xp system
1. See left side of task bar (where you see time) .
2. There is a icon of local area connection (two nos of small monitor).
3. Right click on that icon and click on open network connection.
4. One folder will be open.
5. right Click on Local Area Connection and click on Properties.
6. In a list item select TCP/IP and click on properties.
7. Fill your IP address and clioc on OK , OK and close .
Your IP has been now changed.