I've found PK_Tether on an old hard disk, so here (hopefully) is a Dropbox link:
Dropbox - PK Tether - Simplify your life
I assume I'm not violating anyone's IP rights since it's freeware, but of course I'll happily remove the link if I'm not actually entitled to share it. If I remember correctly PK_Tether is a portable app, so using it is just a case of running the executable with no actual installation needed. But it looks like you might need a .net framework update on Windows 10, or at least it says I do. And I'd rather leave any Windows updates for that one day of the month where I take a deep breath and wait to see which part of the the OS Microsoft has managed to bugger up this time.