Modify a PHP script (Bitcoin related)

************* I posted this previously and accepted a programmer. He was suppose to complete this in 2 days. It has not been over a week and nothing. I patiently waited but cancelled today. The sad part is I did release him an upfront Milestone which I am sure I will not get back. So if you bid, I will be glad to create milestone, but will not release until project totally complete. **************** I am using the same script that runs this site. [login to view URL] The script uses Paypal and Payza as payment processor. I want to add a 3rd option of Bitcoin to receive payment for the items I sell from my site. This is what I would need modified. The member purchase whatever is being offered by using bitcoin and I would have a way for the script to notify me that the purchase was made and what was purchased and by whom (userrid). I do not have a zip copy of the script itself, it is installed on my site, so I would need you to backup the whole site before any modifications are begun. I look forward to your interest. Thanks.