The bridge was necessary to get this to work, but I think "Internet Connection Sharing" should be ok too.

As an easy way to start the script, I'm using "personal menu".
The script takes about 1 min to get connected, (even if a notification in windows appears almost instantly when the script starts)

For Widcomme bluetooth, it must be part of your bluetooth drivers, if not, you have to figure out where to find it
I can upload mine (41 MB) if you cant find any ....