I am trying to add a new 2008 server as a dc on a 2003 network and have successfully run adprep/forestprep. Now I need to run domain prep but it is telling me to switch the domain to native mode.
Firstly, why? and secondly will there be any risks/adverse effects anything to look out for etc etc?
I also have an exchange 2003 server and a sql 2000 member server - there are currently 2 other DC's on the network which are primary and secondary dns machines.