Hi Phil,

I assume you're using the (free) MetaTemplate.

(1) create a new rule
(2) at the top of the rule, set "$language handling" to "Joomla front-end language" (the default)
(3) don't touch the "preferred list of languages". That's for language negotiation with the browser.
(4) in the Advanced section, in the PHP box, write a rule like:

if ($language_code == 'fr') return true;

(5) then in the SUCCEED Actions, set the template that you want to use for French, using the drop-down provided
(6) repeat, setting up a new rule for each language that you want to detect.

Alternative:
- you can do this all in 1 rule if you want to.
- set up (1) to (3) as above
- for the PHP rule, write:

if ($language_code == 'fr') return 'beez';
if ($language_code == 'de') return 'ja-purity';
if ($language_code == 'nl') return 'template3';
if ($language_code == 'en') return 'template4';

I hope this helps,
Regards,
Stephen