You might check your html code, there's some problems there:
http://validator.w3.org/check?uri=http://development.simhq.com/cgi-bin/ultimatebb.cgi Fixing those will most likely fix your issues.
I also wrote a tutorial about 5 years ago regarding adding a header/footer/sidebar - it may help <img src="https://www.ubbcentral.com/boards/images/graemlins/smile.gif" alt="" />
https://www.ubbdev.com/db/ultimatebb.php/topic/15/1.html
