Convert PHP Script to Wordpress Plugin

We created a registration script (mini-shopping cart) in PHP. The website that is using this script has been upgraded to Wordpress, so we need to convert the script to a Wordpress Plugin. The script to be converted is attached. These are the additions to the script needed: 1. When a purchase is made, it records the person's information in a CSV file. We need it to add the total amount that person paid to the CSV entry row. 2. The script, as it is written, reads the [login to view URL] username and api key from a file. As a wordpress plugin, it should store that information using add_option, get_option(), and update_option(). ## Deliverables The script to be converted is attached. The script in action may be viewed here: [login to view URL] * * *This broadcast message was sent to all bidders on Monday Oct 10, 2011 2:54:50 PM: One of you brought it to my attention that some files were missing from the .zip file. Those files have been added. Please re-download the attachment and adjust your bids accordingly (if necessary).