Unable to add Affiliate links

Hi I am unable to figure it how and where i should add the script for earning affiliate commission :
http://cuelinks.com

Installation

Installing CueLinks is easy! Once you add this code, all your normal links will automatically be converted into money-making links. They are converted into affiliate links on the fly, when someone clicks the link.

You will need to copy and paste the code below into your website's template just before the tag (generally found in the footer section). Ask your account manager for help, in case of any difficulties with installation.

var pubID = '543CL529'; (function(d, t) { var s = document.createElement('script');s.type = 'text/javascript'; s.async = true;s.src = 'http://cdn0.cuelinks.com/js/cuelinksv1.js'; document.getElementsByTagName('body')[0].appendChild(s); }());