Product Customization Module for Zen Cart

I am looking for a Product Customization script or module that will work with Zen Cart. I want something similar to [login to view URL] or [login to view URL] in terms of functionality. The customer will have the option to customize t-shirts with text, photo, and color. They will have the option to either upload there own photo or select one from our collection. They should be able to resize the text and the photo. We would need the ability to assign categories to our images. We should also be able to assign prices depending on the customization. Please let me know if you have any further questions. If you have done this sort of site before please send samples.