OK, here's what worked for me:
- Click on the Updates icon in systray to open up the Updater window.
2 Select "Custom Install" (note: I didn't write this down as I went, so that may not be the exact name, but it's the alternative to "Express Install.")
- Uncheck all three updates and click "Next."
- You should get a pop-up warning that nothing will be installed. At the bottom of the window is a check box with "Do not notify me of these updates again." Check the box and click "Next."
The Updater window closed and the Updates icon went away from the systray. I've rebooted the computer since then and the update icon hasn't come back after an hour. The last couple of days it's come back in a few minutes. I think I've found the solution.
Seems so simple, but I always just accept the "Express Install (Recommended)" and click on "Continue," so it took me a while to try the alternative.
I don't have Office 7 installed, and I don't have the Excel Viewer 7 installed and the damned updates have been installed at least a dozen times over three days so I don't think I'm leaving myself vulnerable here.