[Samba] replacing samba server

[Stuart Highlander]

good morning,

i am currently running samba version 3.0.23a on fedora core 4 linux as a 
pdc.

i would like to convert the server to centos linux due to the death of 
the fedora legacy project..

i think that the process to do this, as it pertains to samba, would 
follow the process to replace a samba pdc.

can someone point me to the link of a howto that would aid me in 
replacing a samba pdc, i.e., what files need to be backed up, 
importing/exporting sid's, etc...?

thank you,

stuart