Greeting Card Preview Script

Hello, We need a Greeting Card preview script written in PHP. The script will run on Linux server. The functionality of the script will be : 1. User will enter the text and click preview. 2. The script will create a new image of the pre determined greeting card with the user entered text placed on the card in a pre determined font and arranged in a pre determined format. We need this done quickly. Please show us any demo if you have created something like this before. Regards, Azim Shah