Add 2008 DC to a 2003 Domain

I have read bits and pieces and wanted to make SURE this is valid.
I have 3x 2003 domain controllers in different sites. I want to add a 2008 server as a 4th DC to the forest and 2nd DC to a site.  This server wont hold any FSMO roles but simply act as a DC.
I will install DNS on the DC as a safeguard if the primary fails and adjust the DHCP info.  But do I do any thing more than simply add it to the domain and promote it?  
Grady-VogtAsked:
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Glen KnightCommented:
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rjwesleyCommented:
http://blogs.microsoft.co.il/blogs/dand/archive/2009/06/05/upgrade-to-windows-2008-domain-controllers-adprep.aspx

Read that...

Rob

Likely just the usual domainprep adprep forestprep steps...

If you might have had any 2000 servers (windows or exchange) that weren't removed properly then you will get those warning indicators running the prep programs.
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Grady-VogtAuthor Commented:
Dunny thing is the MS does not say to run domainprep by it self but with adprep /domainprep /gpprep
Should I run regular domainprep first? or does it run with gpprep?
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tigermattCommented:

Run the commands:

adprep /forestprep
adprep /domainprep /gpprep

The /gpprep switch is required to modify the access control lists on the SYSVOL directory for Group Policies.

Then it is simply a case of running dcpromo to promote the server as a Domain Controller, followed by installing the DNS role.

As a point of note, you should also make this DC a Global Catalog. In a single-domain forest you can happily make all DCs Global Catalogs to increase efficiency. This is the best practice.

-Matt
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tigermattCommented:
Hi,

Any reason the points were not split, as all the Experts contributed and I answered your follow-up?
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Grady-VogtAuthor Commented:
Yes, I did not know I could split them... Sorry.  and I followed the first guys suggestion and already completed the project. I just did not close until today.
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Grady-VogtAuthor Commented:
not that yours was wrong at all!  Just new here. I will look for that next time
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Windows Server 2008

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