D-Link DIR-3040 - Connect Wireless Client - Windows 7; Connecting to Wi-Fi Network on Windows 7

128D-Link DIR-3040 User Manual
Section 6 - Quick VPN
Select the Security tab. For the Type of VPN, select Layer2Tunneling with
IPsec (L2TP/IPSec).
Right-click on the Quick VPN Connection you just created and left-click on
Properties.