Incrementing textbox

Hi all


i have got a shopping cart , and i need 2 b able 2 filter out the order that the users have made for email purposes and so far i havent been successfull.

so i have thought of another way , is it possible 2 have a textbox that whenever the user enters the page it increments by one , and then i can use this number form the textbox as the orderid

Is this possible or is there a better way , because my main problem is filtering for that specific record it always returns the 1st record all the time.

Thanks