Switching from Windows Server 2000 mixed mode to Windows Server 2003

We have 4 different DC's in 2 different sites.  All DC's are 2003.  Is there anything I need to do before I go into AD UC and "raise the domain function level" to Windows 2003?
Where do I raise the forest level? Do I do this before or after raising to Windows 2003 move?
I ran NETDIAG and DCDIAG without issues.
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This KB article from Microsoft should help you out:  http://support.microsoft.com/kb/322692
U raise the forest function level with ADDT
Go through this which explains on these levels. http://www.petri.co.il/understanding_function_levels_in_windows_2003_ad.htm

Go through this which explains how to change it http://www.petri.co.il/raise_domain_function_level_in_windows_2003.htm
mrbodjaglesAuthor Commented:
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