Confirm page is Blank

I'm using Dreamweaver CS3 with eCart to generate the pages. I've used the wizards to create the pages for display and checkout, but when I go to test them the confirm page is blank. I am using USPS as shipping method, Paypal Website Standard for payment gateway.

I am testing on a local server behind a firewall and since if I download the sample cart pages, I get the same issue I wonder if I have something either misconfigured or is their a change I need to make to the firewall to get this to work properly?

When a php page displays blank, it means a php error has occurred, but the php error reporting is set to not display the errors.
either change the setting in the php.ini file:
display_errors = ON

error_reporting = E_ALL

or add the following at line 1 of your page:

<?php
error_reporting(E_ALL);
ini_set('display_errors','on');
?>

I double checked the php.ini file and made sure that those lines are there, but it didn't make a difference. I did add it to the .php file and I would get

"Fatal error: Call to undefined function curl_init() in H:\Inetpub\wwwroot\cisnew2\WA_eCart\WA_eCart_USPS_PHP.php on line 123"

So I assume I've missed something, but new to PHP and not sure what to look for.

ok, I did notice from searching the boards that the php_curl.dll extension isn't loaded and it isn't in my php directory at all.

ok, since i couldn't find the dll I re-installed php and found out where to tell it to install it from, so that is good and it's no longer giving me a blank page, but it isn't getting the shipping information from USPS, I get

UspsCom::DoAuth

on the fail page.

I see there have been threads on that so I will look there before asking more questions.

are you using the usps production server:
shippingapi.dll

you may need to contact USPS to have your account authorized on the production server.