I. One-time Setup:
Turn on your Wifi Adapter.
Select Network and Sharing Center option from the menu that appears by right clicking the network icon in the system tray or
Open the Network and Sharing Center from the Control Panel
and click on Manage Wireless Networks in the left pane

Click on Add
Click on Manually create a Network Profile
Enter the information as shown and then press Next:
Click on "Change Connection settings" :
Select the Security tab:
Select Security type as WPA2-Enterprise, Encryption type as AES or TKIP if required,
Select Choose a network authentification method as Microsoft:Protected EAP (PEAP), and then
Click Settings:
Tick ccmail07.iitd.ernet.in as shown below in the Trusted Root Certification Authorites, Select Authentication Method as Secured password (EAP-MSCHAP v2), and then
Click Configure
Untick Automatically use my Windows logon name and password ..., and then Click OK
Click OK on Protected EAP Properties dialogue box,
Click OK on IITD_WIFI3 Wireless Network Properties dialogue box, and
Click Close on Manually connect to a wireless network dialogue box.
You have successfully completed the one-time setup, and are ready to connect to IITD_WIFI3 Wireless Network.
II. Every-time connecting to IITD_WIFI3 Wireless Network
Select Connect to a network option from the menu that appears by right clicking the network icon in the system tray
Select IITD_WIFI3 wireless network, and click Connect
Click Enter/Select additional log on information when asked for in the Connect to a network dialogue box
Type your Username and Password, leave Logon domain field as blank if asked for, and Click OK
Click Close on Connect to a network dialogue box containing Successfully connected to IID_WIFI3 message
You have successfully connected to IITD_WIFI3 secured wireless network as being indicated by the network icon in the system tray
III. Disconnecting from the IITD_WIFI3 wireless network
Move to Disconnect from option from the menu that appears by right clicking the network icon in the system tray, and then Click on IITD_WIFI3.
The network icon in the system tray will change state as shown below: