Our company has been forced to move to Windows Server 2003 due to
discontinued support for Novell by various accounting packages we run,
including Lacerte and Intuit, but would like to keep our Groupwise
email. I understand Groupwise can be run completely on a Windows server--
MTA, POA, GWIA, and Webaccess.

Here is our current setup:
Windows Server 2003 R2, completely up to date on patches

Netware Small Business Suite 5.1 SP8, Server version 5.00.11
NDS 8.85c
MTA & POA 6.0.3 beta
GWIA 6.0.2
Webaccess 6.0.1

We also have a new copy of Netware 6.6 Small Business Suite we purchased.

To migrate our existing Groupwise system from the old Netware server to
the Windows 2003 server, would it be better to install the existing NDS
and Groupwise versions on the 2003 server, or the new versions? I'm
assuming we need to install NDS on the 2003 server so it can bring across
the mail accounts to the proper users.