Image Headlines Postscript Font support

I really like this plugin, but since it has been such a long time since it was updated, it is lacking a feature I need. The main title font I use is a Postscript font (.pfb), not a Truetype, and though I know I can use it for dynamic images in PHP, the script doesn’t support it. I was wondering if anyone knew how to include that kind of support into it. Thanks.