In order for the hosted wireless network to work you need to use a Windows 7 approved driver
which will install the Microsoft Virtual WiFi mini port
, this mini port is what allows you to create the hosted wireless network.
I'm not too sure about how this will work through a broadband dongle.
This link shows you how to set up a hosted wireless network both manually and using the connectify software. http://www.winsupersite.com/article/...ion-wirelessly