Upgrade BDC to 2003 but keep PDC on 2000 server - is it possible?

In my current network I run two Windows 2000 servers. The first one as file & print and the second one for exchange. I now plan to upgrade my BDC/mailserver to Windows 2003 and Exchange 2003. Is it possible to keep the installation of the Windows 2000 server as a PDC or do I have to upgrade it to windows 2003?
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there is no PDC and BDC unless you are using NT4

you can keep the 2000 machine is if you want - its better to run 2003 coz 2003 is much better but if you want 2000 and 2003 thats fine

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Handersson75Author Commented:
My misstake, The Windows 2000 will run as domain controller.... Is that possible?
yeah that is fine :) you will need to run the adprep tools to extend the schema for 2003

thanks for the points but can i ask why its a B grading?
Handersson75Author Commented:
my misstake on th b-grade, can it be changed?

I am reading right now about the adprep tools...  

Is it any disadvantages to upgrade the existing win 2000 server or is to prefer, instead of a clean win 2003 installation?
hmm advantages of a clean install is that it is clean if you know what i mean? your not inheriting any bugs etc and it is a lot nicer to work with

though saying that upgrades usually go fine also, depends on the time that you have in the end

adprep basically extends your schema - for standard 2003 install there is adprep /forestprep and adprep /domain prep    for R2 install there is a 3rd gpprep and they all have to run from the 2nd R2 cd

if you want to regrade you can post in community support and ask for it to be changed - up to you :)
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