Hi Sean,
Sorry to keep going back and forth but now it looks like the Name and Adress info is handled for placing into an email. What is left is the buisness of getting 'description' and 'quantity' in the email. I will assume that it won't matter whether description and quantity come from a combo box which is filled from a table or are manually filled into two text boxes. Looks like you need a button to do your entry and then hit the button. Hitting the button pushes the value into a html field ( for visibility) and into a hidden field with some JavaScript. Then the next selection or entry and push of the button pushes the next value into the same fields thus buidling a string of values until you are done building your order.
If the javascript is done right you have this hidden field that will have this formatted string that can be pushed into an email along with the name and address information when the form is submitted.
Also, the button will be something to create because it can't be the submit button on the form. To make this work would be to work with an HTML button that will run the javascript with some onmouseclick type of event on the button. See this link for help:
http://www.w3schools.com/tags/tag_button.asp Hope this gives you the idea on how to do it. For working with javascript online searches and demo 20 of dynamic forms on DataSprings site might help.
Thanks