Build a linux box from just source code

From: Gagan (gaggi20_at_gmail.com)
Date: 04/25/05 

Date: 25 Apr 2005 07:33:34 -0700

i want to build a linux box from just source code. can anybody know how
to build linux box from source code e.g (taking source codes
Kernel,grub etc ....). I want to know the steps to build it because
this is my boss requirement & i have to complete it to save my job. help