How do I do a remote validation for jquery.validator.js with a seaside component?

Hi List.

I am implementing server side form validations with the jquery.validation.js plugin.

There are examples for doing a remote validation of a username to help to ensure that they stay unique within a site.

I am now at the point where I want to write a Seaside “component” that will respond to the jquery.validation remote call .

I am not sure how to approach this.

From the internet, a typical example of a php implementation  looks like this:

<?

$email = $_GET['email'];


function isValidEmail($email){
return eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email);
}

if($email=="")
{
$errormsg="error1";
}
if(!isValidEmail($email) && $email!="")
{
$errormsg="error2";
}


echo $errormsg;
?>

I am wondering if I should intercept these on the initialRequest of my applications custom WATask

MyWATask>>initialRequest

            "new user registration ajax lookups"

      (aRequest url pathString endsWith: '/jquniqueloginlookup')

                        ifTrue:[?????WHAT DO I DO????].

Thanks for your time.