Looking for a particular script

Hi people, I once saw a php script that created graphics (buttons) by taking an image and then pasting (overlaying) text in a font over the top. This script was great for dynamically creating graphics for database queries and such. But for the life of me I cannot find it again. I kind of stumbled across it when I first found it, but I thought I would ask the list if they knew of the said script and if there was somewhere I could get it again. I believe that the script could display the text in any true type font that was avialable, as long as they were installed on the server. Any help would be great as I really need to create a series of images on the fly via a script such as this. - Shannon