[GM]

I think it has something to do with:

# Fields filled with errors
#
	if (!empty($fillerror)) $reg_error="F";
	if (!empty($eerror)) $reg_error="E";
	if (!empty($uerror)) $reg_error="U";
	}
if($anonymous_user) {
	$uname="";
	$passwd1="";
	$passwd2="";

I should mention that I am trying to checkout as an anonymous user.

Zip/Postal code * P0H 1A  << ---this is good!

Shipping Address (leave empty if same as billing address)
--------------------------------------------------------------------------------
 
Title    Mr. Mrs. Ms.  
First Name  ..........................  << --not good
Last Name..........................    << --not good
Address