Create Clone of Scriptlance.com

hello all, i currently have a website [login to view URL] i want to change this site around to function more like [login to view URL] i also want to incoporate a new design which i already have the design files. basically, i want to build a new site using the scripts i currently have at [login to view URL], change the scripts around a little to function the way i want and to incorporate the new design.