Zonerider is a windows based Hotpsot gateway which is similar to the one you just mentioned. The real difference is the size of the download (0.5mgb), and its simplicity in its service. Zonerider operators or Zonemasters can offer their broadband access via an Access point connected to their PC. The Gateway is built with Firewall protocols and SSL based encryption. End users access very much like a typical hotspot and pay for a month or even 1 hour, while the Zonemaster gets 70% of the revenues.
So if you are paying for a fat pipe of 8mbs you can offset those costs by sharing the service, with others.
And the best part is you can remain completely anonymous.
Take a look
http://www.zonerider.net