Turn a Wordpress sites skin into single image sprite

We would like the images from our Wordpress skin turned into one single image sprite, like Google have done. So that the entire sites skin elements are pulled from just one image. Here is the Google sprite - [login to view URL] We would also like an unnecessary CSS removed from the site, and style sheets merged to reduce our overall page load time. We have a dedicated server and CDN network to ensure fast delivery of static files. If you have any other services you can offer to enhance the load times of our site, please specify in the note along with your bid. Thank you