changing the name of a server

I have a windows 2003 small business server and I have to change the name because it contains an underscore in the name. I tried to load Exchange and it did not like the underscore.
My question is; do I need to set up a second server and make it a domain controller, demote this one, change the name and then promote it? Or can I just rename the server (take out the underscore)?
johnbowdenAsked:
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Netman66Commented:
You should be able to rename it, but you'll likely need to follow this afterwards:

http://support.microsoft.com/kb/316826/en-us

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mvvinodCommented:
You can rename the domain controller if forest and domain level is in windows 2003.

Raise the forest level if you are not going to have any windows 2000 domain controller.

Easiest is to rename. Other method is a hassle.  Follow this http://www.windowsitpro.com/Article/ArticleID/41055/41055.html

Vinod
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Netman66Commented:
I'm pretty sure you only need Forest and Domain functional levels at 2003 if you are renaming the domain - not the DC.

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mvvinodCommented:
NOT TRUE. Domain level of 2003 is required. Forest level is optional. PLeas read the first line of above document.

Vinod.
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