New Kernel

Hi 
I bitbaked Angstrom fs,kernel,uboot by downloading it from 

http://repo.or.cz/w/openembedded/mini2440.git 

and was successful in creating the image files.
 
I need to now add proprietary code in the kernel.

My question is 
1) Where is the kernel located and how can I ONLY bake the kernel after
adding code to it.
2) I also need to modify the kernel options.  I have no need for swap disk,
and networking how do I disable it in the kernel and ONLY bake a new kernel
image.


regards