My New Wireless does not work - http://www.ezlan.net/wireless.html
Wireless, Basic Configuration - http://www.ezlan.net/Wireless_Config.html
http://www.ezlan.net/ip_mac.html
How to troubleshoot wireless network connections in Windows XP Service Pack 2
http://support.microsoft.com/kb/870702
A Support Guide for Wireless Diagnostics and Troubleshooting
http://www.microsoft.com/technet/network/wifi/wlansupp.mspx
Advanced network adapter troubleshooting for Windows workstations
http://support.microsoft.com/kb/325487
Check the Hosts file
Press the WinKey + r and type or copy this command: notepad C:/Windows/System32/drivers/etc/hosts click OK or press Enter.
Normally there would be only one entry:
127.0.0.1 localhost