>>It's not a good idea to install SQL 2008 and later on Windows 2003 server because of memory management problems
>
>I have this setup at one location and did not experience any of that.
>
>Do you have more info on this?

Lucky you. We has such set up (64-bit) and were getting SQL Server messages about memory not been available and SQL Server would freeze for a while because Windows would use it's swap file at that time.
We had to upgrade to Windows Server 2008 to resolve it. I think there's MSDN KB article about it http://support.microsoft.com/kb/918483.