Business Card Designer

I need a business card and sign designer similar to the one at ([login to view URL]) The design size will be determined by passing length and width variables into the script. It should have the ability to add text, add clipart/shapes and add images like the link above does. When the design is complete and the user presses the submit button, the user will see a design reference code. The admin should be able to generate a high res 300 DPI version of that design.