Do site da Dell:
Click Start.
Click Programs or All programs.
Point to Intel PROSet Wireless.
Click Intel PROSet Wireless.
When the message Windows is currently managing this wireless adapter appears, click Enable Intel PROSet/Wireless.
Click Profiles.
Click Add.
Ensure Network (Infrastructure) - Connect to wireless networks and/or the Internet is >selected.
Input the Profile Name and Wireless Network Name (SSID), then click Next.
Ensure Enterprise Security is selected.
Using the drop down menu next to Network Authentication:, select WPA - Enterprise or WPA2 - Enterprise as needed.
Using the drop down menu next to Authentication Type: select the correct type of EAP authentication.
Click OK, once the wireless network adapter is configured for EAP authentication.
Click Close on the Profiles window.
Instruções ligeiramente diferentes aqui, podem ser para o XP.