Is it possible to join a Win2003 Server to a Win2000 Domain Network 1

[Technyc2003]

I'm currently working on a sharepoint server for my job and it required Windows 2003 Server which I did install. Now I'm trying to install Active Directory on that server but I get the following error message:

The operation failed because:
The active directory installation wizzard cannot continue because the forest is not prepared for installing Windows Server 2003. Use the Adprep command-line tool to prepare both the forest and the domain. ....

"The version of the Active Directory schema of the source forest is not compatible with the version of Active
Directory on this computer."

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All of our servers are Windows 2000. I was trying to add this one as a secondary along with the other Win2000 servers but won't let me do it.

Any suggestions? Or is it possible Windows 2003 cannot join a Windows 2000 Server as a secondary domain controller along with all the others I have here in the office?

 

[kutz13]

Have you read these?

http://support.microsoft.com/default.aspx?scid=kb;en-us;278875

http://support.microsoft.com/default.aspx?scid=kb;en-us;325379