CSS layout work

Hi coders, I need a small job to be done. I have a HTML page. The layout of the entire page is created with table. I want this layout to be changed to CSS & XHTML based. The layout should be changed to CSS & XHTML based and also it should be SEO friendly. The layout should be separated header, body and footer using div. And important thing is once the CSS layout is made, it should look exactly like the table based layout and it should look the same when viewed through all major browsers. Let me know if you need more details. Thanks