Recent versions of Dreamweaver automatically create two editable regions in the head of a template. The first is called "doctitle", and should contain only the <title> tag like this:
<!-- TemplateBeginEditable name="doctitle" --> <title>Your Page Title Goes Here</title> <!-- TemplateEndEditable -->
The second is called "head", and goes just before the closing </head> tag. It looks like this:
<!-- TemplateBeginEditable name="head" --> <!-- TemplateEndEditable --> </head>
If you are using an old version of Dreamweaver, you need to add the "head" editable region manually to the main template file. Just copy and paste the two lines shown above immediately before the closing </head> tag.