On Thu, 14 Jun 2012 06:35:13 -0400, Stan Brown
wrote:

In general:
SHIFT-right-click on a item of that type, select "Open With"*»
"Choose default program".

In this particular case:
Run Winzip, choose Options*» Configuration*» System.
(My Winzip may be older than yours, so the menu may not be exactly
the same, but I'll bet dollars to donuts there's still an option to
let you reassociate Winzip with archives.

Thank you. Problem is now solved. I'd like to thank the others who
have also contributed to this thread.