Process of update

1.  On the desktop right click on MY COMPUTER.
2.  Select MANAGE.
3.  In the "Device Manager" select the adapter you wish to update.
4.  Double click. 
5.  Select DRIVER.
6.  Click UPDATE DRIVER ... .
7. Follow the instructions given by Windows XP (x86) to locate the driver. 
8.  If the driver which is found to be the latest is not the one you want 
    to install, select the checkbox "Install one of the other drivers".
9.  Click NEXT. 
10. Select the driver to be installed in the next listbox.
11. Click NEXT.
    If a message is displayed saying that the driver is not digitally signed 
    by Microsoft, click YES.
12. The message "Windows has finished installing the software for this 
    device" is displayed.
13. Click FINISH to complete the installation.