First login to your dashboard. Click on Add domain> add the domain without "www"
Then go to manage domains> Show Code.
You code should look something like this:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script src="http://owlhq.com/appv3/member/GaireTrack/tracker.js"></script>
First login to your wp-admin dashboard.
Appearance > Editor
Now look on the right side > there should be a file called header.php
Paste your code right under <script type="text/javascript" src="<?php bloginfo('template_url'); ?>/javascript/imghover.js"> </script>
I have attached a screenshot showing you.