Due to my exchange server being hijacked, I had to rebuild the server (Windows 2003) and I am now re-installing Exchange Server 2003. I perform all of the preliminary tests, including Forestprep and Domainprep, but when I get to the actual install page and click on "Typical Install", I get the following error message: A server object for this server already exists in the Administrative group "First Administrative Group". If you are attempting to recover this serverplease run setup with the "DisasterRecovery" switch otherwise you must first remove this server object from the Active Directory by using the Exchange System Manager.
Since I am doing a clean install and not a disaster recovery, the first part of the error does not apply. And I cannot delet the server object using Exchange System Manager, because I have not yet installed ESM. How do I get rid of the server objects?