Can you upgrade the "Using external sources" page
http://www.zenphoto.org/news/using-external-sources

the link for "instructions as for video thumbnails" does not work.

Done

Thanks.

You can also change in the admin theme page

http://www.zenphoto.org/zp/theme/
in
http://www.zenphoto.org/theme/

I guess I need a little help finding that link.

Just looked and found I think. The one on top of the themes tab.

Yes, i forgot to add the tab.