Do you know HTML? Basically you're replacing what is in your template for a blank variable where stuff from the adoptables script will appear.
So, for instance, if you open your template you'll see something like:
Code:
<title>Template Title is Here</title>
You would replace with:
Code:
<title>:BROWSERTITLE:</title>
This way whatever title you set in the ACP is used when the adoptables script loads a page. :)
When you say it doesn't work, what exactly happens?