Hi, I sent you an email with the following info (repeated here for anyone else who wants to do the same) :

Here's how to show the module to only people with their browser setting in Italian:

1 - ensure you read and understand the Quick Start guide: http://www.metamodpro.com/metamod/quick-start

2 - set $language handling to "Browsers preferred language" as you have done

3 - set Preferred list of languages to "it,en" if these are the 2 main languages you are detecting (although this step is not generally required). Note that this is not the same as restricting the module to only "it" language. It has a special use - see the popup help/description on the caption of the box. Basically, if any of the preferred languages of the browser are found in this box, then MetaMod will use one of them, even if it's not the browser's most preferred language. If that sounds too confusing then just leave it blank - don't just leave it as "it" as that will set the $language_code to "it" even if English is the browser's most preferred language but Italian is 2nd.

4 - leave the "Quick module position or id include" box EMPTY

5 - in the PHP box, use the following:

if ($language_code == 'it') return 148;

6 - save and test.