That fixed it! Reinstall got me nowhere fast, but uninstall/reinstall did the trick. For what it's worth, I have other computers scattered around the house, running other Linux systems. The same malware popped up a few weeks ago when I was doing something, and I was on Ubuntu. I think that I had to reboot to close it, but when Ubuntu came back up, the malware site was gone. And another system that I like, Vector Linux, has a neat little feature called, I think, Ap Killer. When called from the system menu, your mouse cursor turns into a skull and crossbones, and wherever you drag the mouse across and click on is gone, period. Would be a nice feature to have had in this case.
Anyhoo, where do I go to mark this "solved"? And thanks a bunch, it only took a few seconds to do once I knew where/how to go.