Everything back to normal (I think) I downloaded the latest ZA free to a distant partition.
Used the old ZA's own uninstaller.
Used regedit to comb Drive C: for every last reference to the old ZA finding 25 or 30 in the registry.
Used search and found references on distant partition which I couldn't delete since the folders were unreadable. These must have been references in a couple of Acronis backups on that drive.
Deep breath and installed the download.
One check only from ZA of a general nature and now can open the face of Zone Alarm from the taskbar as expected. The appearance has changed, but it is new!
This post was intended to go here, but was typed into another earlier thread about the original trouble with a sluggish browser linked earlier.
The collective problem seems to have been solved.
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