Connecting to multiple Databases

Hi

I am trying to connect to 2 database within drupal. Need is to save Drupal forms information (Username/ Company/ City) in non Drupal database to generate reports. I saw on drupal website this can be achived by adding database to settings.php
So I added :-
$db_url['default'] = 'mysql://drupaluser:drupal@localhost:3306/drupal6';
$db_url['test'] = 'mysql://drupaluser:drupal@localhost:3306/test';

Now I go to content > Form and under Additional Processing of webform I add following code
<?php
db_set_active('test');

try {
mysql_query("INSERT INTO test (username, company, city)
VALUES ('Peter', '35', 'XXXXXX')");

mysql_query("INSERT INTO test (username, company, city)
VALUES ('Glenn', '33', 'YYYYYY')");
} catch (Exception $e) {
echo 'Caught exception: ', $e->getMessage(), "\n";
}
echo "Insertion Complete";
mysql_close($con);
db_set_active('default');
?>

But it doesn't work. Any Idea what I am missing??

Thank you in advance