Replacing Win2k3 DC

[David W. McSpadden]

I have 3 DC's in my Domain.  I am at the life's end of one of them.  I am 
building a server to replace it.
I need to know how to determine what roles this server has so I can be sure to 
get them on the new server.
What is the best practice to replace a DC and to migrate the roles???
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