My customer wants the order number to appear as a three digits number. In fact, order number 1 will be order number 1, but it has to appear as 001. Perhaps I can give a 4 digits format, you are right. How can I do that? Do I have to write any code on the confirm page? If so, what code should I write? Do I have to modify my MySql database? Please tell me how to do. Thank you.