Login to Amazon Seller Central using PHP and Curl -- 2

First Thing==> This is NOT a MWS API script. What it is... I want to have a login script that allows for a user of my service to "authorize" my service to login to Amazon's Seller Central at sellercentral.amazon.com. This should be a PHP Curl Script/Class or Function with a simple interface for a user of my service that I will integrate into my current project. . What this should do is ask a user for a login username and password that gives access to seller central. It should then try to use the given username/password and verify that they are correct by trying to login with the script. When amazon recognizes that the user is new they sometimes have a verification step. This verification step should be displayed to the user so that they can give the necessary information to the script so that the script can then send amazon the verification information and verify that it can login to seller central. Once the verification is complete the username/password given will be returned for insertion into my database so that they can be used to grab url content. This script has to be able to access the main sellercentral site so that it can scrape the content of any page that requires the seller central login. This script should also be a PHP class that allows my php script to input the seller central username/password along with an url. The PHP Class should then login and grab the given Url's Contents and return them as a document that can be parsed by my scripts. Again, this is not a MWS API script, it is to actually login to seller central.