security image font change

Here is my very simple code for making security image, I am not happy with font style and size, Please help me so that i can change the font size and style

	session_start();
	$str = str_shuffle('abcdefghijklmnopqrstuvwxyz0123456789');
	$substr = substr($str, 0, 6);
	$im = imagecreate(60, 25);
	// white background and blue text
	$bg = imagecolorallocate($im, 255, 255, 255);
	$textcolor = imagecolorallocate($im, 0, 0, 0);
	// write the string at the top left
	imagestring($im, 9, 2, 4, $substr, $textcolor);
	// output the image
	header("Content-type: image/png");
	imagepng($im);

Code (markup):

thank you

 

I'm pretty sure you can load a .ttf file on the server side. Check out Peter's anti-spam plugin for wordpress, he does it in that code

 

www.php.net/imageloadfont

http://puremango.co.uk/cm_fontmaker_114.php

 

Use the function that nico_swd suggested.

http://www.wedwick.com/wftopf.exe : Use this tool to convert win fonts to gd fonts.