Re: changing the look of forums: need to add code into tikineat.css from another template.
You can use Firefox browser and the Firebug add-on to check what CSS selectors are used by the forums. There might also be comments in the CSS files labelling lines used by forums. Basically you need to copy the relevant lines in lesjetsdelencre.css and replace the same lines in tikineat.css with them.
-- Gary