I wrote a very short script to use imagettftext() to create forum signatures on the fly
Here is the end result

The code:
Code:
<?php
$rImg = ImageCreateFromJPEG("img.jpg");
$cor = imagecolorallocate($rImg, 230, 190, 120);
$black = imagecolorallocate($rImg, 0, 0, 0);
$font = './font.ttf';
imagettftext($rImg, 11, 0, 242 - (strlen($_GET['name']) * 2), 24, $cor, $font, $_GET['name']);
imagettftext($rImg, 10, 0, 242 - (strlen($_GET['text']) * 2), 85, $black, $font, $_GET['text']);
header('Content-type: image/jpeg');
imagejpeg($rImg,NULL,100);
?>
Blank image:

The font I used:
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