CSS Driven HTML Design

We require someone to provide us with HTML and CSS code for the header part of our website, so that we can have our logo on the left and a 728X90 banner on the right side. Similar to what you see in the header on this site: [login to view URL] The CSS driven HTML code should be all based on div, there being a div left and div right in the header. This will be only for the header/ top part of the website. We do not need CSS code right now for the rest of the website. We will supply the winning bidder with our existing CSS stylesheet and HTML code, so they can work with that to allow us to place a banner on the top part of the page.