I think so. That snag seems to have gone away; everything's up to date and the machine checks as activated. Weird thing, though. Control panel not opening, refusing to let me log in via the login screen, but logging me in automatically on boot (only one user and I didn't put in a password, yet), listing the box as "not activated," directing me to a rather unfriendly page about piracy and the evils thereof... I hope it was just a glitch in the update process that's good and cleared up by now.
So all set here. The stock AMD fan is a bit louder than I like, other than that I'm pretty happy with things as they currently stand. Perhaps I'll see if I can fit the hunk of aluminum and copper I had in the old box on it; it looks like it might fit. Gotta get some fresh thermal paste though...