Some changes you'll be able to locate quite easily; changing texts and small tweaks can be doable even if you don't know any programming- *simple* PHP code tends to be pretty accesible.

Greenland native Rasmus Lerdorf was tired of writing the same code over and over while creating his personal home page back in 1995. So, he says, he wrote “a very simple parser” to replace ...

We want to auto dial, right? Now you're going to want to replace the page you just made with some simple PHP code. You'll find that PHP code in autodial.php.