Hi Caryn,
A blank page usually indicates an error in the php.
You could try adding error reporting to see if the page will show where the problem is.
Add the following to the very top of your 'database.php' file, and then run through the setup again - you should get an indication of what/where the problem is:
<?php
error_reporting(E_ALL);
ini_set('display_errors','on');
?>