include/register.php
Code:
$fillerror = (empty($uname) || !empty($error) || empty($passwd1) || empty($passwd2) || ($passwd1 != $passwd2) || empty($firstname) || empty($lastname) || empty($b_address) || empty($b_city) || (!empty($states) && empty($b_state)) || empty($b_country) || empty($b_zipcode) || empty($phone) || empty($email));
Simply edit that if statement to your liking.
The template file:
skin1/main/register.tpl
merry xmas!
