CSS modification on a PHP site to accomodate IE6

I have a recently developed site that has rendering issues with IE6. The site is www.woodencrates.org. This site is entirely php pages and uses FileMaker as a database. There is NO knowledge of FileMaker required but I mention it to assure you are aware that there may be unfamiliar code in the pages. I believe the site was rendering properly recently and the problem is the result of recent table/css changes. My need is not to correct the specific problem created (i.e. identify the specific tag(s) creating the problem) but to add an overall fix to accommodate IE6. Every affected page contains the same general table/div structure so I am only requesting the change be made to one page. I will copy any required code to the other pages. This project requires that you as the developer understand CSS and table structures well enough to reasonably believe the fix will correct all similarly structured pages. If you do not have IE6, I've been told that the product at [login to view URL] will support multiple versions of IE. The site currently renders properly in all of the last two versions of every browser on Mac and Windows and must do so after the change. I need the repair made immediately but I will not be available over the weekend (EST GMT-5) so diligence today is preferred. Please do not bid unless you can show an extensive history with CSS and PHP. Thank you.