You'll need to use some sort of server-side scripting. After you've figured out what server-side scripting language is available, you'll need to find out how to read a file into a string, and how to do a string replace. Once you've got that all figured out, all you need to do is put in placeholders for the title and the content, say {title} and {content}, save it in a file, then for each page, put the page content in a string, read the template from the file, and do a string replace to set the title and the content, then output the completed page (the string-replaced template).