Changes to the server behaviors will only effect the page they are applied to. changing the customer_order_history.php page will have no effect on the order_histor_details.php page.
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.