Install Auth and MDB2

Hi,
I have download LAPP 1.1.4. I have installed auth and mdb2 modules (pear install auth…).
In LAPP 1.1.2 version, these modules are installed in /opt/…/lib/php/ directory, but in this version, I look for in the same directory but nothing like auth.php or mdb2.php files exists.
When I try my application, an error in error_log appears:

PHP Fatal error: require_once() [function.require]: Failed opening required ‘Auth.php’ (include_path=‘.:/opt/lampstack-1.1-4/php/lib/php’) in /opt/lampstack-1.1-4/apache2/htdocs/cine/igep/include/valida/gvhBaseAuth.php on line 9

I don’t know what it’s happening.

Thanks.