im using nginx as a front end for static content, and apache as backend

problem is depending what is called from each server i get error pages from nginx and error pages from apache showing up on images/pages

how do i make say nginx server handle all error pages

and secondly, nginx does not have a sysyem startup like apache, anyone know how i can acomplish this, i tryed sc in command and it created a service but error something like took to long to startup.