Convert Web Site to xHTML Strict

Recreate Web site in xHTML strict +CSS. Inherited current client and there Web site. Site does not render properly in any browser except Internet Explorer. Reconstruct site in xHTML and CSS and replicate the exact design and functionality in the process. Must be a completely table-less design except where tables are warranted (for tabular data). Contact us functionality can remain, but the markup should only appear on one page and not on each individual page. First page functionality (with popup upon entering page) must stay. [login to view URL] Will provide all source files and graphics. Final deliverable must be exact replica of current design and functionality.