Exchange 2003 System Manager for Windows Vista
Although you could install the remote management tools for Exchange Server 2007 since the release of Service Pack 1, it was not possible until today to install the Exchange 2003 System Manager on Windows Vista.
So, if you want to administer Exchange Server 2003 from your Windows Vista desktop, please download Exchange System Manager for Windows Vista.
Exchange System Manager for Exchange Server 2003 running on the Windows Vista operating system
This download will allow installing and operating the Exchange System Manager for Microsoft Exchange Server 2003 on Windows Vista OS
Please read carefully the Release Notes where, among other things, you can learn about the prerequisites: