Things have been quiet around here while I plug and unplug cords, move equipment, and calculate (without sufficient knowledge) power draw parameters.
And new horizons (still wrapped in a protective covering):
Amazingly, after I figured out that I didn't have to move the old CPU in order to make room for it plus a new CPU (the new computer's calculating parts are inside the monitor frame) it took about five minutes to set this system up, although I spread that out over a couple of hours because I did some office cleaning, too (to look at the office, you might not be able to tell that).
It's hooked up. It's been turned on. The major design-related software has been installed. The printer has been plugged in, and the computer knew exactly where to find it without a hitch.
Spinner's note: In the first photo, behind the box, those are St. Blaise double-row combs, attached with C clamps to my daughter's child's chair, which is a perfect combing bench (and one of the most versatile pieces of furniture, in many regards, that we've ever lived with . . . thanks yet again, Mom!). There are other sets of combs, of different types from other makers, in the room but these are the ones that have been on call lately.
The miracle is that, with multiple pairs of wool combs within reach, at the peak of PC frustration I only ripped up an old phone book.