Well, this time it was a lot easier. Had my power screwdriver charged, had the good luck to have a properly removable slider-bar for the hanging curtain sliders, and it took about 10 minutes to completely remove the ugly vertical blinds, another 20 to put up the hangers for the insulating curtains.

They're a bit off-center the way we hung them. The sun tends to get in one's face on the one side, so I put the curtain where it would be able to block that better, and it leaves the other side a bit empty-looking. But they look much better than the vertical blinds ever did.

Now to figure out when to clean up the office so we can get around to painting it. Not sure what we'll do with the contents (and the computer!) while we do that.