How to build only linux-image-2.6.18-6-686

[Mauro Ziliani <mauro.ziliani@ngi.it>]

Hi all.
I need to rebuild only the linux-image-2.6.18-6-686 deb package from 
source code.
How can I do that without rebuild all packages in linux-2.6.18 sources 
(xen, k7,vserver)?

Thanks a lot