I don't believe I didn't find that Tutorial. I searched through a few dozen Tutorials before I posted this question. Clearly, my technique is lacking. Thank you for the pointer.
At the step in the Tutorial where it says to right-click & create a Shortcut, instead of that, I just dragged the icon into my Startup folder on the Start Menu. Problem solved.
That Tutorial is not quite 100% intuitive. Well, not the Tutorial itself, but the underlying thing it's describing. Since I have no desire to change the settings on my adapter, I have never clicked that selection to get into that level of the Control Panel. Of course, once I got there, I could see what to do. If I had ever thought to click that, I wouldn't have needed a Tutorial or your helpful advice to do what I want.
Except now I'm seeing something completely unexpected. I no longer want that entry in my Startup folder for opening the Network and Sharing Center. So I navigated to it & hit the Delete key. I get the expected confirmation prompt to which I reply Yes. And then I get a dialog box asking if I want to delete Desktop.Ini.
Say what? I'm no expert but I know enough that I don't want to do that. I wish the dialog showed me the path to the Desktop.Ini file it thinks I'm asking to delete. I do know there's multiples of that file in the system & if I knew which one it was prompting me about, I might feel comfortable canning it.
I went into Windows Explorer & found at least 3 places where there are Start Menus:
At some level of the tree traversal below each of those, there's a Startup folder. I suspect there are several more. And there's a Desktop.Ini file in every one of those Startup directories. So I held my breath & went ahead & let the system delete the Desktop.Ini file it was asking permission to delete. I must not have found the right directory in my search because all three of the Startup directories below the 3 I list above still have a Desktop.Ini file in them. So it deleted another one from somewhere else & the entry is gone from my Startup folder in the Start Menu. All is rockin' & continues to rock.