from their FAQ at:
http://www.antiadbuster.com/faq.php
Q: I don't know ASP or PHP is it tough to install these scripts?
A: You don't need to know ASP or PHP the installation is so simple its just one line of code that you need to add to your page, if you have problems installing it on your server please use the contact form and we will help you.
Q: I know my hosting company supports PHP / ASP but all my pages are ending with .htm and .html not with .PHP or .ASP how can I install Antiadbuster?
A: Well you will need to convert your .htm page to .asp or .php (Don't worry you don't need to know ASP or PHP programming to do this, just follow the steps given below)
Make sure you make a backup of your existing files before you make these changes!
Suppose you want to install Antiadbuster on your site on the page index.htm (I am assuming that you have PHP installed on your server)
To convert your index.htm to index.php you just need to rename your file index.htm to index.php, Now open your index.php file and add this code on the first line before any of the HTML tags and save the file.
<?php include 'adbust/antiadbuster.php'; ?>
That's it, you have installed Antiadbuster!