Viewer and ZIP files

I have Opus10 and wondering why ZIP files show up in the preview pane as hex...wouldn't it be nice to show the contents so you can preview without opening?

Is there a setting I'm missing?

You'd normally get the zip file contents shown, via the ActiveX plugin and Internet Explorer, unless you've modified the ActiveX plugin's configuration or done something unusual to IE (or perhaps to the Zip filetype in the registry).

(That isn't really an intentional feature; it's just something we got for free when integrating IE into the viewer for HTML files, since IE happens to be able to display zip files as well.)