Problem in setup

Hello, I'm Marcelo, webmaster of a brazilian government health institute. We are considering this tool (IBreplicator suite) to our replication needs but I'm getting errors during setup. The error message says: cannot find an entry point for procedure RtlDuplicateUnicodeString in library ntdll.dll It appears to be some compatibility issue, or missing requirement. I'm trying to install it on a Windows 2000 SP4 machine with 1GB ram. This machine is weekly updated via Windows update, etc, etc. Some useful info: NTDLL.DLL version: 5.0.2195.7006 Installer info: ibreplicator_2.0.build_15.1.win.exe I've also noticed the exactly same error occur when I inspect the installer properties and click on the 'summary' tab. Any hints?