Shoutbox

I need help in creating a simple page.

I make a page resembling http://thcnet.net/zork/index.php
But I have limited knowledge of PHP to create the same one.

So far, I have this:

code:

---

<?php

$prompt = $_POST['inputPrompt'];

if( strcmp( $prompt, "" ) == 0 ) {
    echo "&gt; " . $prompt;
    echo "<br />";
}

?>
<form action="index.php">...</form>

---

How do I make it remember the last entries before the form?
I know I might be able to use hidden input text, but it's dirty.

Thanks. I really appreciate it.