samba - Apr 2008 - hardware change

Hi all,

I'm just thinking to change my PDC's hardware and I've a question
for
you all: is there a way to migrate the whole configuration of Samba at a 
glance without having to rejoin all clients to the domain and re-setting 
all the users' passwords?
My passdb backend is now "tdbsam".

Thank you in advance.

Roberto