Ptxdist: How to recompile kernel.

Hi all, i have compiled kernel using ptxdist setup. 
 My question is :
 
 1. If i modify or add a file in kernel, how do i reconfigure it?
 2.  And how do i build a module externally with the ptxdist toolchain?

Plz help me... thnx in advance.

1. modify using ptxdist menuconfig, save, ptxdist drop kernel compile,
ptxdist go

2. Get a copy of OSELAS.BSP-Pengutronix-Generic-arm-Quickstart.pdf and look
for ptxdist newpackage section 4.2.1

thnx davef

Oops, that was suppose to be ptxdist kernelconfig NOT menuconfig!