creating and customizing domu's for Xen

[AndEat]

I'm looking into setting up a Xen server using hardy as DomO

I want to know how I can create specialized versions of ubuntu and other nixs to run on the server as domU's...

e.g. creating a version of ubuntu with X and Y as a mailserver only in a very pared down OS having only what is needed and running immediately.

I'm guessing I need to build my skill set, any directions or suggestions for reading or clarifying what I am trying to do would be appreciated. I'm just starting this project.

[mircsicz]

aptitude install xen-tools& man xen-create-img

Greetz
Mirco