how to build a non-pae xen enabled etch kernel image

[xav <xav@spotk.net>]

Hi list,

i'd like to use non-pae domU kernel images (ie for netbsd) on an etch 
xen setup, and non-pae xen kernel images are not provided anymore.

What is the proper way to build a non-pae xen kernel image package from 
2.6 debian sources ?

thanks in advance

xavier