design for a social engine and deals script

we have a website that is based on social Engine Script. we have a theme that we did on Photoshop and we want someone to just apply it on the website . we have a group buying website . at some point we need a designer to change the theme of the website , also what happened is that by mistake the designer missed or removed the buy now button from the template which basically links to the payment gateway for the customer to pay and completes the purchasing process . the code for the buy button most probably exists in the code (back end ) we need to show it on the site on the correct page . please only bid if you understand what you need to do . Best Regards, Bowzy Team