We recently did an install of Windows Server 2003 Enterprise x64 on one of our servers. From what I can tell the File Server role was not initially installed using the Manage Your Server wizard, but appears to have been installed when Exchange 2007 was installed, or when the first shared folder was created.
Therefore, when I now run the Manage Your Server Wizard, I get the option to "Upgrade this role" (see screen shot)
When I attempt to run the wizard to upgrade the role and add the "Replicate Data to and from this server", I get the following error
I'd rather not have to remove the role completely as it appears that Exchange has some file shares set up as well for OWA, which I'd rather not get rid of due to past issues with that application.