56724 Simple 1 page PHP change

I have a website ([login to view URL]) with a billing system ([login to view URL]). I want the billing pages to match the rest of my site. I want my header on the billing pages...BUT...it probably won't work like that, because the billing pages have a header with buttons and drop down menus. I don't want to lose any of the functionality of the site or the ModernBill header that is on there now...I need someone to take the header/logo I have a sort of re-design it and put in the same menus and buttons as the ModernBill one. If you can do this, please bid. It only needs to be updated on 2 of the PHP pages.