Look on the side of your laptop or on the keyboard area and turn on your wireless off/on switch. If you still dont have a blue wireless indicator for the available wireless networks then you may need to look in your device manager. There you can see if a wireless network device is installed. Some wireless network cards will ask you if you want windows to control your wireless device or the device may have its own software. If you need a driver hopefully the WIRED network device is installed. If so you can download a driver for your laptop model wireless device, hopefully after that you can see your available wireless networks.

enable the wireless in the bios, and make sure you have the drivers for it installed from the makers website or the processor makers website, and that they are installed and working. If the ethernet network driver is shown in the device manager, disable it and then run the network setup wizard after installing the wireless drivers and rebooting..

http//downloadcenter.intel.com/default.aspx/

http://support.amd.com/

Install the driver from your laptop set up disk and make sure that it is the one for XP.