It also installed a bunch of equally bogus icons elsewhere on the desktop, it changed my browser homepage, and it added a bunch of unwanted "favorites" to the browser, including ones for car-buying, stock-trading and online-dating (I'm married!) which truly pissed me off.

Anyway, when my present real Spyware program failed to reset it all even after a reboot, I tried a System Restore...going to a restore point about three hours before the infection. This worked.
About 24 hours later, though, I had the same problem again -- although the Hijacker now had a completely different name and appearance (orange graphics around what looked sorta like a Windows defrag screen). I ran another System Restore, and once again I got all my settings and my browser back.
I strongly suspect this mess was the result of visiting a particular website, which I immediately deleted from my favorites and vowed never to visit again. That was on Tuesday and I've now been clear of the problem for three whole days.
Is it safe to assume I'm okay now? Or is it possible that this thing is still lying in wait for a third attack?