I'd suggest you to have a text field to display the numbers this way, if you want to keep a numeric value you can have a numeric field hidden in background that keeps the text field's value.
To add specifics to my question above...I have a form and part of it is filling in 2 digit numbers for location and department. For example a location would be 03 and a department might be 07. In testing the form, when I put those numbers into the numeric field and tab to the next field the zeroes disappear. How do I get the numeric field to hold the zeroes?