<?php

$message = "Welcome! First of all, let's configure your platform. <a href=\"/system/backoffice_config_general\"><u>Click here</u></a> to fill in your information or <a href=\"/system/backoffice_config_email\"><u>here</u></a> to configure your email addresses";

$notif = new Backoffice_Model_Notification();
$notif->setTitle("Welcome!")
    ->setDescription($message)
    ->setOriginalNotificationId(0)
    ->save()
;