You do not want to do that your IP address is auto set by router If you change you will not have any access to the internet
only change your IP address if you know what you are doing
Correct setup for your network adapter on the desktop
Click “Start”, “Settings”, then “Control Panel”.
2. Double-click on the “Network and dial-up connections
“Network” icon (Windows XP).
3. Right-click on the “Local Area Connection” associated with your
network adapter and select “Properties” from the drop-down menu.
4. In the “Local Area Connection Properties” window, click “Internet
Protocol (TCP/IP)” and click the “Properties” button
5. Select “Obtain an IP address automatically
6 Obtain DNS server address automatically”
7 Click “OK”.
Your network adapter is now configured for use
with the Router.