Exchange 2000 in a Windows 2003 domain

I have a Windows 2003 forest with a couple of Windows 2000 servers, and I need to install Exchange 2000 onto a member server in the domain. I know that Exchange 2000 can run on a Windows 2000 server in a 2003 forest, but is there anything special I need to do before I run “SETUP /FORESTPREP” or “SETUP /DOMAINPREP”?