Update 100 WP Themes - new

I have a zip file of 100 wordpress themes that I have paid for. I want to add a link to the footer of each theme for a backlink to one of my sites. So when I give them away as a free theme library and anybody uses them I get a link back to my site ( preferably a 'do follow' link). I will provide 'Anchor' text and URL to winner. This is a very simple job - you just have to do the same thing 100 times using a php editor such as PSPad I will have another freelancer test all the sites to be sure that work has been carried out correctly, prior to payment, so please be clear on that: all edited themes will be checked for extra links and any bad coding. Please PM with the code you would put into [login to view URL] for an 'example' site such as; This is my example site > url: [login to view URL] so I can see who is 'real' and who is not. Thank you, Clive