Two steps required. Before moving on, please make sure your system is Windows 7.
Download and install the newest driver for your wifi from here (32 bit, 64 bit) (Very important).
Click start, enter "cmd", press "ctrl + shift + enter". This allows you to open DOS under admin.
Copy paste following two commands into cmd, one by one.
netsh wlan set hostednetwork mode=allow ssid=Test key=password
netsh wlan start hostednetwork
Now launch your virtual router, it should work well.