Redesigning of Website and compatible with integration with our Database

We are looking for a professional designer, who can redesign a VoIP website: (Site reference will be given upon request) Our client is a Retail VoIP service provider. Master database/functionality is based on Asterisk/A2Billing platform We need following changes: ~ Need entire site design, inner pages, user pages, forgot password, FAQ, Become re-seller etc. ~ User Pages needs to integrate/fetch data from database (A2Billing) ~ For CMS pages, Announcement, Banner management modification/editing we need separate admin panel. ~ Live Chat integration required ~ W3C validation script required Rest detailed requirement document will be provided before project is awarded. ~ We need entire work to be delivered in 1 week or less. ~ NO upfront payment will be released.