Simple changes to booking site (wordpress)

We have a car rental booking site ([login to view URL]) which we need some simple changes made to the booking process. It is built on wordpress. Enter in the following credentials to our search to see the following pages we need changes to. Auckland - Auckland Campervan 11/10/13 - 21/10/13 2 Passengers Vehicle Results Page: - Instead of opening a new window for "vehicle info", "Insurance", "Accessories", "Terms", and vehicle image loads within a popup viewer like ([login to view URL] then PRICE DETAILS) - Instead of "Add to Booking" change to a bigger "Book" button and remove "Next Step" Button from the bottom of the search results page. Extras and Insurance Page - Remove yellow navigation bar from top header - Insert a "Back To Results" button to the lefthand side of "Next Step" button Booking Summary Page - Remove yellow navigation bar in header - Remove link for vehicle image. We will provide wordpress logins etc.