Question : Problems running adprep /forestprep There is a schema conflict with Exchange 2000. The schema is not upgraded.

About to install a Windows 2003 server in a Windows 2000 domain. Have to run adprep + domaiprep. After running adprep /domainprep i got a message like this:
"Adprep was unable to extend the schema.
[Status/Consequence]
There is a schema conflict with Exchange 2000. The schema is not upgraded.
[User Action]
The schema conflict must be resolved before running adprep. Resolve the schema c
onflict, allow the change to replicate between all replication partners, and the
n run Adprep. For information on resolving the conflict, see Microsoft Knowledge
 Base article Q325379."

I have read the Q325739 and tried the "Scenario 3" (correct me if I am wrong here)  but I do not understand to do after number 5, it does not say execute or anything else... What shall I do here is my first question?

Answer : Problems running adprep /forestprep There is a schema conflict with Exchange 2000. The schema is not upgraded.

you dont have any mangled in that string