Server 1 is Windows 2003 x64. It is Active Directory domain controller, the only one currently. It's running VMWare server which is hosting 2-3 virtual servers. It took over operations from an older 32-bit DC which was also running Exchange.
One of the virtual servers (call it virtual-2) is Windows Server 2003 and running Exchange 2003. All the mailboxes were migrated there and everything is running nicely for existing users.
The issue: Server 1 does not have any Exchange attributes in AD for any of the user accounts. I do not want to make virtual-2 a DC (although I suppose we could if absolutely necessary). Exchange 2003 setup won't run on Server1 because it's 64-bit. It says :
Compatibility issue with this version of Windows. Check here http://go.microsoft.com/fwlink/?LinkId=37488
So the question is how do we get Exchange attributes on Server1?