No, you do not modify it in the program, you either modify the code that is created by the program, or write the code to process the transaction from scratch.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.