You're welcome
The first thing you might do is validate your html:
http://validator.w3.org/check?uri=http://www.ffcobra.com/ubb/ultimatebb.php&doctype=XHTML+1.0+Transitional&ss=1
Skip the parts that are about the base ubb code, just work on the parts that correspond to your header/footer/header insert html. That will make sure your site displays as well as possible in all browsers, the error message will tell you basically what the problem is and how to fix it. THEN we can tweak it a bit to look/work like you want it
