Hello,
Thank you for considering me. I'd like to do the work for you.
I've been developing interfaces between databases and forms since 1984. Customer and membership systems have always been a part of that. As have interfacing them with Ordering systems, like when they are purchasing products that they pay for. Getting the information for the customer and putting it into the appropriate fields to place an order with was always a part of that. So was implementing various types of search functions.
In your project description you've said that after you enter the client information you print the receipt. That seems like it would be a good place to be inserting the customer information into the database if it's not already there. That might help you avoid entering all the customers in initially. But I'm just guessing at this point.
I've very familiar with Php/MySql systems, and somewhat familiar with Nederland, too. (I'm located in the Chicago area myself.)
Please don't hesitate to write back, even if you just have some questions. And thanks again for taking the time to consider me.
Dag,
Jim (Fourth Ring Consulting)