X server sharing on ubuntu

As you know X window system eat most system resources in the machine.It's ok with my personal computer, but it deffer when it comes to a enterprise server.So by default any Ubuntu server doesn't come with X server. It's ok with experienced Linux users.But I have to work with other user who have no good knowledge of Linux. So I have to find a way to get X window system in Ubuntu server without using it's own resources.At last I decide to use backup server as a desktop environment for the server.Here how I configure it to server as a X server.