Hi,

When we activate the seo plugin, we stil can acces to old url:

image:
http://www.zenphoto.org/zenphoto/index.php?album=demo-gallery&image=P4130926.jpg
http://www.zenphoto.org/zenphoto/demo-gallery/P4130926.jpg.php

album:
http://www.zenphoto.org/zenphoto/index.php?album=demo-gallery
http://www.zenphoto.org/zenphoto/demo-gallery/

There is no function to redirect old urls to the new one?

With "seo-plugin" you mean the modrewrite option I assume.

Both links are the same, the first is the pure, normal link, the second is the rewritten one if you are using modrewrite that in the "background" it is still the same, just "masked" to look better.

Yes I mean modrewrite

I know what is url rewriting, but the problem is we can acces to the same page with 2 differents urls, this is not good for search engin ranking,

I don't want Google to index 2 urls landing to the same page.

sorry for my english.

First, it is not possible to change that for the reasons I explained. Second, if you use modrewrite there are nowhere urls of the unrewritten type generated by Zenphoto (except on the backend but that is not important for SEO) so Google can't find any to follow and therefore there is no duplicate content issue.