PHP Font Trouble...

I have a code that puts text on an image...

Code:

<?php
// Set the content-type
header("Content-type: image/png");

// Create the image
$im = imagecreatefrompng('RS Highscores Image.PNG');

// Create some colors
$black = imagecolorallocate($im, 0, 0, 0);
$grey = imagecolorallocate($im, 128, 128, 128);

// The text to draw
$text = 'Help me out here!!!';

// Replace path by your own font path
$font = 'Fonts/ARIALN.ttf';
$fontbd = 'Fonts/ARIALNB.ttf';
$fonti = 'Fonts/ARIALNI.ttf';
$fontNew = imageloadfont("Fonts/ArialSpecial.gdf");
// Add the text
imagettftext($im, 13, 0, 50, 53, $black, $font, $text);
//imagestring($im, $fontNew, 50, 53, $text, $black);

// Using imagepng() results in clearer text compared with imagejpeg()
imagepng($im);
imagedestroy($im);
?>

Now, I need the font to match the one on this page, and Arial appears to be the font, but when I put it on the image, it has a slightly grey shadow or something... Anyone have any ideas of a font that will match that one, or how I can get rid of the "shadow?"