thanks guys !
i tried footer putter. it looks nice.
the footer they have on their website is exactly what i wanted to achieve.
http://www.diywebmastery.com/plugins/footer-putter
I have a footer already set with my theme, with tags, flickr, categories.
and I'd like to add a footer like there is on the diywebmastery website, with the terms, privacy links.
It won't show in 2 footers one under the other if you add the "footer copyright widget" from the plugin as a footer widget.
I understood I have to change the hook, but I don't understand how to change that. There is a field in the plugins parameters where to type the hook name.
Have you got any idea what to write there ?