Hi,
I just thought I'd post my experience with this in France.
Unblock-us works with a landline broadband connection ONLY (says so on their website). They supply an app for Windows but you can do it manually with DNS settings. In the event that there is a power outage you may have to reinput from a PC before it will work again.In my case I knew them off by heart such was the frequency of power downs last year.
Sadly my ADSL speed has degraded to such an extent that I have moved over to satellite broadband through ozone.net. This means unblock-us no longer works for any device. I can happily use almost any VPN provider for my PC but as this HUMAX box seems to want to see only a DHCP server and not an FTP I have yet to crack access to On Demand services, but am very pleased with it otherwise, especially EPG which is way better than my old Technomate satellite boxes.