Site renders just fine in Chrome and Safari, however in IE, FF, and Opera the interior pages do not render correctly for 3/4 the page. I have had the same design for 4 years and had no problems in all browsers until recently. If someone could look at the site and let me know what the problem is for working in these browsers it would be greatly appreciated.
Sorry, we don't offer public site reviews here - but we can discuss the issues and maybe help you zero in on the possible causes. Whenever you have cross-browser problems, the first place to start is making sure your code validates. When code isn't valid, you force browsers into their "error correction" routines, and this means differences from browser to browser that are really hard - sometimes impossible - to find and fix.
So - have you run your source code through W3C Validation?