Connecting a website to its ecommerce tools

I have a website under development at [login to view URL] with the photoshop file is already completed, ftp host is set up, product catalogue created in cpanel, shopping cart purchased, and payment gateway and I need it completed for a trade show on friday because my web designer's hard drive failed. The back end work is already completed, but the photoshop file converted to navbars and php files. and connected to the product catalogue and mysql database for products, and then connected to the payment gateway. The website just needs to be connected to these ecommerce tools so it is operational. Can you take this job and could it be completed in week? If more time is needed, this can be done in two segments just to get the website up, and then get the shopping component operational. Any modules needed for the job have been purchased already and logins are available. Sincerely, Meredith Garstin