GD Library working on local machine but not hosts!!

Right, so I'm having an issue with the GD library...

To start, here is my code, very simple.

$string1 = $_GET['string1']; // lets get the text from the form
$string2 = $_GET['string2']; // lets get the text from the form

// define what image we want to write on
$im = imagecreatefromjpeg("images/thermostat.jpg");

// define the text color, red, green, blue
$textcolor = imagecolorallocate($im, 61, 61, 61);

//$font = imageloadfont('DS-DIGI.TTF'); // tells it what font to use

ImageTTFText ($im, 45, 0, 142, 125, $txt_color, "DS-DIGI.ttf", $string1);
ImageTTFText ($im, 45, 0, 142, 180, $txt_color, "DS-DIGI.ttf", $string2);
//imagestring($im, $font, 175, 395, $string, $textcolor); // line o'text

// header to tell the browser it's an image
header("Content-type: image/jpeg");

imagejpeg($im); // creates the image with text

imagedestroy($im); // destroys the image in the memory
?>

Code (markup):

This code is supposed to print out $string1 and $string2 onto the image... It works perfectly on my local machine, however on my Dreamhost server... not so much. Both of them run GD2.

Any ideas?

 

Nevermind...

I just needed to capitilize the .ttf because it's in UNIX instead of on this windows computer.