adding 2k3 DC to 2K domain with exchange   

I am adding a new 2003 Domain controller into a Windows 2000 domain.
I have read KB 325379 and am a little confused.
My existing domain has only one W2K DC (SP4) running exchange2000 Server.
Am I going to end up with mangled attributes in Schema if i run 2K3 adprep 
on the 2K box. If so how do I avoid this.

Thanks in advance for any advice.

date: Mon, 28 Nov 2005 11:29:56 -0000   author:   Gary D