That's just the name of the page he created the frame on I believe. In my case I created a page named frame.php to host the iframe, etc. so the link ended up being:
http://www.franketeam.com/frame.php?path=vodahost.com
So if you just create a php page, and place the iframe there with the work around he mentioned, you should just have to ad "?path=google.com" at the end of that page name.
If it still doesn't work for you, and you don't have the problem I was having with the mod security, you can just insert an html box on a php page, and paste the following code in it:
Code:
<?php
$path = $_GET['path'];
echo "<iframe src='$path' width=750 height=1500 frameborder=0></iframe>";
?>
Then just add "?path=http://www.google.com" to the end of your page name.