Playing around with DSFW. Got an OES 2 SP1 system setup in our play tree with dsfw installed. I'm able to join XP machines to the domain.

Trying to now add a 2003 R2 play server into the mix. When I run the AD install, it give the following error:

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

Says to run adprep, but that command doesn't appear to be on the 2003 server.

Am I missing something, or is what I'm trying to do not a possibility?