//*******
jimport( 'joomla.application.module.helper' );
$module = JModuleHelper::getModule( 'mod_custom' , 'Name Module' );
$len = strlen($this->item->text);
$pos = strpos($this->item->text, "</p>");
$first = substr($this->item->text, 0, $pos);
$NameModule = $module->content;
$end = substr($this->item->text, $pos, $len);
$this->item->text = $first.$NameModule.$end;
//********