Thanks for a superb guide.
I manage it to work on 2 different machines.
Now I am googling and cannot find how to add shortcut on desktop, so user do not need to run it from terminal.
I have a shorcut on desktop now, but after a while window dissapear and script is not running.
There is *internet.desktop file - which is a shortcut I believe. Inside it is:
Comment[en_GB]=Run program as root
Comment=Run program as root
GenericName[en_GB]=tethering from usb
I am on 12.04.
Any advice appreciated.
just forgot to add that main user is not geek so I want to be simple as possible.